diff --git a/Marlin/Conditionals_LCD.h b/Marlin/Conditionals_LCD.h
index 8418385026..630e94ca4c 100644
--- a/Marlin/Conditionals_LCD.h
+++ b/Marlin/Conditionals_LCD.h
@@ -278,6 +278,8 @@
     #define BOOTSCREEN_TIMEOUT 2500
   #endif
 
+  #define HAS_DEBUG_MENU ENABLED(LCD_PROGRESS_BAR_TEST)
+
   /**
    * Extruders have some combination of stepper motors and hotends
    * so we separate these concepts into the defines:
diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 3138a13ba8..400b2f6e0b 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/Cartesio/Configuration_adv.h b/Marlin/example_configurations/Cartesio/Configuration_adv.h
index 5f54f0e758..cca4784368 100644
--- a/Marlin/example_configurations/Cartesio/Configuration_adv.h
+++ b/Marlin/example_configurations/Cartesio/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/Felix/Configuration_adv.h b/Marlin/example_configurations/Felix/Configuration_adv.h
index 2e52c39eb9..ce5fee9f94 100644
--- a/Marlin/example_configurations/Felix/Configuration_adv.h
+++ b/Marlin/example_configurations/Felix/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/Hephestos/Configuration_adv.h b/Marlin/example_configurations/Hephestos/Configuration_adv.h
index 9740e9c754..63214e64f9 100644
--- a/Marlin/example_configurations/Hephestos/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
index a7fab871b9..131d6efb46 100644
--- a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/K8200/Configuration_adv.h b/Marlin/example_configurations/K8200/Configuration_adv.h
index c275fa3b68..c4a2f20b9e 100644
--- a/Marlin/example_configurations/K8200/Configuration_adv.h
+++ b/Marlin/example_configurations/K8200/Configuration_adv.h
@@ -467,6 +467,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/K8400/Configuration_adv.h b/Marlin/example_configurations/K8400/Configuration_adv.h
index 8ee66df5e8..1626f2ffe9 100644
--- a/Marlin/example_configurations/K8400/Configuration_adv.h
+++ b/Marlin/example_configurations/K8400/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/RigidBot/Configuration_adv.h b/Marlin/example_configurations/RigidBot/Configuration_adv.h
index 92a337ba1a..589758e337 100644
--- a/Marlin/example_configurations/RigidBot/Configuration_adv.h
+++ b/Marlin/example_configurations/RigidBot/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/SCARA/Configuration_adv.h b/Marlin/example_configurations/SCARA/Configuration_adv.h
index 647fb71224..3033bcdd6d 100644
--- a/Marlin/example_configurations/SCARA/Configuration_adv.h
+++ b/Marlin/example_configurations/SCARA/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/TAZ4/Configuration_adv.h b/Marlin/example_configurations/TAZ4/Configuration_adv.h
index 0211a9caff..0ae81cfbbf 100644
--- a/Marlin/example_configurations/TAZ4/Configuration_adv.h
+++ b/Marlin/example_configurations/TAZ4/Configuration_adv.h
@@ -462,6 +462,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/WITBOX/Configuration_adv.h b/Marlin/example_configurations/WITBOX/Configuration_adv.h
index 9740e9c754..63214e64f9 100644
--- a/Marlin/example_configurations/WITBOX/Configuration_adv.h
+++ b/Marlin/example_configurations/WITBOX/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h b/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
index 114951d57b..bd8bd22970 100644
--- a/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
@@ -456,6 +456,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/delta/generic/Configuration_adv.h b/Marlin/example_configurations/delta/generic/Configuration_adv.h
index b3a2039e52..14213dac4f 100644
--- a/Marlin/example_configurations/delta/generic/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/generic/Configuration_adv.h
@@ -456,6 +456,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
index b3a2039e52..14213dac4f 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
@@ -456,6 +456,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
index b438af2894..33e591078f 100644
--- a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
@@ -461,6 +461,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
index a98c53eaec..0fc896f6ba 100644
--- a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
@@ -456,6 +456,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/makibox/Configuration_adv.h b/Marlin/example_configurations/makibox/Configuration_adv.h
index 1f5446dc5f..e8d3bec2d1 100644
--- a/Marlin/example_configurations/makibox/Configuration_adv.h
+++ b/Marlin/example_configurations/makibox/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
index 190c18ce3b..b0b9e917ff 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
@@ -454,6 +454,8 @@
     #define PROGRESS_MSG_EXPIRE   0
     // Enable this to show messages for MSG_TIME then hide them
     //#define PROGRESS_MSG_ONCE
+    // Add a menu item to test the progress bar:
+    //#define LCD_PROGRESS_BAR_TEST
   #endif
 
   // This allows hosts to request long names for files and folders with M33
diff --git a/Marlin/language_en.h b/Marlin/language_en.h
index 219e41fdcd..65eaacbbc9 100644
--- a/Marlin/language_en.h
+++ b/Marlin/language_en.h
@@ -51,6 +51,12 @@
 #ifndef MSG_DISABLE_STEPPERS
   #define MSG_DISABLE_STEPPERS                _UxGT("Disable steppers")
 #endif
+#ifndef MSG_DEBUG_MENU
+  #define MSG_DEBUG_MENU                      _UxGT("Debug Menu")
+#endif
+#ifndef MSG_PROGRESS_BAR_TEST
+  #define MSG_PROGRESS_BAR_TEST               _UxGT("Progress Bar Test")
+#endif
 #ifndef MSG_AUTO_HOME
   #define MSG_AUTO_HOME                       _UxGT("Auto home")
 #endif
@@ -139,10 +145,10 @@
   #define MSG_LEVEL_BED                       _UxGT("Level bed")
 #endif
 #ifndef MSG_MOVING
-  #define MSG_MOVING                          "Moving..."
+  #define MSG_MOVING                          _UxGT("Moving...")
 #endif
 #ifndef MSG_FREE_XY
-  #define MSG_FREE_XY                         "Free XY"
+  #define MSG_FREE_XY                         _UxGT("Free XY")
 #endif
 #ifndef MSG_MOVE_X
   #define MSG_MOVE_X                          _UxGT("Move X")
diff --git a/Marlin/ultralcd.cpp b/Marlin/ultralcd.cpp
index e234c27bad..e1f73567a0 100755
--- a/Marlin/ultralcd.cpp
+++ b/Marlin/ultralcd.cpp
@@ -316,6 +316,7 @@ uint16_t max_display_update_time = 0;
   #define MENU_BACK(LABEL) MENU_ITEM(back, LABEL, 0)
 
   // Used to print static text with no visible cursor.
+  // Parameters: label [, bool center [, bool invert [, char *value] ] ]
   #define STATIC_ITEM(LABEL, ...) \
     if (_menuLineNr == _thisItemNr) { \
       if (_skipStatic && encoderLine <= _thisItemNr) { \
@@ -623,6 +624,47 @@ void kill_screen(const char* lcd_msg) {
 
   #endif // MENU_ITEM_CASE_LIGHT
 
+  #if ENABLED(LCD_PROGRESS_BAR_TEST)
+
+    static void progress_bar_test() {
+      static int8_t bar_percent = 0;
+      if (lcd_clicked) {
+        lcd_goto_previous_menu();
+        lcd_set_custom_characters(false);
+        return;
+      }
+      bar_percent += (int8_t)encoderPosition;
+      bar_percent = constrain(bar_percent, 0, 100);
+      encoderPosition = 0;
+      lcd_implementation_drawmenu_static(0, PSTR(MSG_PROGRESS_BAR_TEST), true, true);
+      lcd.setCursor((LCD_WIDTH) / 2 - 2, LCD_HEIGHT - 2);
+      lcd.print(itostr3(bar_percent)); lcd.print('%');
+      lcd.setCursor(0, LCD_HEIGHT - 1); lcd_draw_progress_bar(bar_percent);
+    }
+
+    void _progress_bar_test() {
+      lcd_goto_screen(progress_bar_test);
+      lcd_set_custom_characters();
+    }
+
+  #endif // LCD_PROGRESS_BAR_TEST
+
+  #if HAS_DEBUG_MENU
+
+    void lcd_debug_menu() {
+      START_MENU();
+
+      MENU_BACK(MSG_MAIN); // ^ Main
+
+      #if ENABLED(LCD_PROGRESS_BAR_TEST)
+        MENU_ITEM(submenu, MSG_PROGRESS_BAR_TEST, _progress_bar_test);
+      #endif
+
+      END_MENU();
+    }
+
+  #endif // HAS_DEBUG_MENU
+
   /**
    *
    * "Main" menu
@@ -633,6 +675,13 @@ void kill_screen(const char* lcd_msg) {
     START_MENU();
     MENU_BACK(MSG_WATCH);
 
+    //
+    // Debug Menu when certain options are enabled
+    //
+    #if HAS_DEBUG_MENU
+      MENU_ITEM(submenu, MSG_DEBUG_MENU, lcd_debug_menu);
+    #endif
+
     //
     // Switch case light on/off
     //
@@ -1302,12 +1351,6 @@ KeepDrawing:
       MENU_ITEM(gcode, MSG_AUTO_HOME_Z, PSTR("G28 Z"));
     #endif
 
-    //
-    // Set Home Offsets
-    //
-    MENU_ITEM(function, MSG_SET_HOME_OFFSETS, lcd_set_home_offsets);
-    //MENU_ITEM(gcode, MSG_SET_ORIGIN, PSTR("G92 X0 Y0 Z0"));
-
     //
     // Level Bed
     //
@@ -1319,6 +1362,12 @@ KeepDrawing:
       MENU_ITEM(submenu, MSG_LEVEL_BED, lcd_level_bed);
     #endif
 
+    //
+    // Set Home Offsets
+    //
+    MENU_ITEM(function, MSG_SET_HOME_OFFSETS, lcd_set_home_offsets);
+    //MENU_ITEM(gcode, MSG_SET_ORIGIN, PSTR("G92 X0 Y0 Z0"));
+
     //
     // Disable Steppers
     //
@@ -1341,7 +1390,12 @@ KeepDrawing:
     //
     // Cooldown
     //
-    MENU_ITEM(function, MSG_COOLDOWN, lcd_cooldown);
+    bool has_heat = false;
+    HOTEND_LOOP() if (thermalManager.target_temperature[e]) { has_heat = true; break; }
+    #if HAS_TEMP_BED
+      if (thermalManager.target_temperature_bed) has_heat = true;
+    #endif
+    if (has_heat) MENU_ITEM(function, MSG_COOLDOWN, lcd_cooldown);
 
     //
     // BLTouch Self-Test and Reset
@@ -2698,7 +2752,7 @@ KeepDrawing:
 
   #endif //SDSUPPORT
 
-  void menu_action_setting_edit_bool(const char* pstr, bool* ptr) {UNUSED(pstr); *ptr = !(*ptr); }
+  void menu_action_setting_edit_bool(const char* pstr, bool* ptr) {UNUSED(pstr); *ptr = !(*ptr); lcdDrawUpdate = LCDVIEW_CLEAR_CALL_REDRAW; }
   void menu_action_setting_edit_callback_bool(const char* pstr, bool* ptr, screenFunc_t callback) {
     menu_action_setting_edit_bool(pstr, ptr);
     (*callback)();
@@ -2838,7 +2892,7 @@ bool lcd_blink() {
  *     - Before exiting the handler set lcdDrawUpdate to:
  *       - LCDVIEW_CLEAR_CALL_REDRAW to clear screen and set LCDVIEW_CALL_REDRAW_NEXT.
  *       - LCDVIEW_REDRAW_NOW or LCDVIEW_NONE to keep drawingm but only in this loop.
- *       - LCDVIEW_REDRAW_NEXT to keep drawing and draw on the next loop also.
+ *       - LCDVIEW_CALL_REDRAW_NEXT to keep drawing and draw on the next loop also.
  *       - LCDVIEW_CALL_NO_REDRAW to keep drawing (or start drawing) with no redraw on the next loop.
  *     - NOTE: For graphical displays menu handlers may be called 2 or more times per loop,
  *             so don't change lcdDrawUpdate without considering this.
@@ -2951,12 +3005,15 @@ void lcd_update() {
 
           encoderPosition += (encoderDiff * encoderMultiplier) / ENCODER_PULSES_PER_STEP;
           encoderDiff = 0;
-          #if ENABLED(DOGLCD)
-            drawing_screen = false;  // refresh the complete screen for a encoder change (different menu-item/value)
-          #endif
         }
         return_to_status_ms = ms + LCD_TIMEOUT_TO_STATUS;
-        lcdDrawUpdate = LCDVIEW_REDRAW_NOW;
+        lcdDrawUpdate =
+          #if ENABLED(DOGLCD)
+            LCDVIEW_CALL_REDRAW_NEXT
+          #else
+            LCDVIEW_REDRAW_NOW
+          #endif
+        ;
       }
     #endif // ULTIPANEL
 
diff --git a/Marlin/ultralcd_impl_HD44780.h b/Marlin/ultralcd_impl_HD44780.h
index 3fa45604af..38edbc747a 100644
--- a/Marlin/ultralcd_impl_HD44780.h
+++ b/Marlin/ultralcd_impl_HD44780.h
@@ -530,11 +530,15 @@ void lcd_print(char c) { charset_mapper(c); }
       safe_delay(2000);
     #endif
 
+    /*
+    lcd.clear();
+
     lcd_set_custom_characters(
       #if ENABLED(LCD_PROGRESS_BAR)
         false
       #endif
     );
+    //*/
   }
 
 #endif // SHOW_BOOTSCREEN
@@ -569,6 +573,25 @@ FORCE_INLINE void _draw_axis_label(const AxisEnum axis, const char* const pstr,
   }
 }
 
+#if ENABLED(LCD_PROGRESS_BAR)
+
+  inline void lcd_draw_progress_bar(const uint8_t percent) {
+    int tix = (int)(percent * (LCD_WIDTH) * 3) / 100,
+      cel = tix / 3, rem = tix % 3, i = LCD_WIDTH;
+    char msg[LCD_WIDTH + 1], b = ' ';
+    msg[i] = '\0';
+    while (i--) {
+      if (i == cel - 1)
+        b = LCD_STR_PROGRESS[2];
+      else if (i == cel && rem != 0)
+        b = LCD_STR_PROGRESS[rem - 1];
+      msg[i] = b;
+    }
+    lcd.print(msg);
+  }
+
+#endif // LCD_PROGRESS_BAR
+
 /**
 Possible status screens:
 16x2   |000/000 B000/000|
@@ -755,21 +778,8 @@ static void lcd_implementation_status_screen() {
     if (card.isFileOpen()) {
       // Draw the progress bar if the message has shown long enough
       // or if there is no message set.
-      if (ELAPSED(millis(), progress_bar_ms + PROGRESS_BAR_MSG_TIME) || !lcd_status_message[0]) {
-        int tix = (int)(card.percentDone() * (LCD_WIDTH) * 3) / 100,
-          cel = tix / 3, rem = tix % 3, i = LCD_WIDTH;
-        char msg[LCD_WIDTH + 1], b = ' ';
-        msg[i] = '\0';
-        while (i--) {
-          if (i == cel - 1)
-            b = LCD_STR_PROGRESS[2];
-          else if (i == cel && rem != 0)
-            b = LCD_STR_PROGRESS[rem - 1];
-          msg[i] = b;
-        }
-        lcd.print(msg);
-        return;
-      }
+      if (ELAPSED(millis(), progress_bar_ms + PROGRESS_BAR_MSG_TIME) || !lcd_status_message[0])
+        return lcd_draw_progress_bar(card.percentDone());
     } //card.isFileOpen
 
   #elif ENABLED(FILAMENT_LCD_DISPLAY)
diff --git a/Marlin/watchdog.cpp b/Marlin/watchdog.cpp
index 4397ab603d..ce8e832b61 100644
--- a/Marlin/watchdog.cpp
+++ b/Marlin/watchdog.cpp
@@ -43,7 +43,7 @@ void watchdog_init() {
 //=================================== ISR ===================================
 //===========================================================================
 
-// Watchdog timer interrupt, called if main program blocks >1sec and manual reset is enabled.
+// Watchdog timer interrupt, called if main program blocks >4sec and manual reset is enabled.
 #if ENABLED(WATCHDOG_RESET_MANUAL)
   ISR(WDT_vect) {
     SERIAL_ERROR_START;