diff --git a/Firmware/Marlin.h b/Firmware/Marlin.h
index ecd5fa73b..ac55a7874 100755
--- a/Firmware/Marlin.h
+++ b/Firmware/Marlin.h
@@ -304,6 +304,7 @@ extern uint8_t host_keepalive_interval;
 extern unsigned long starttime;
 extern unsigned long stoptime;
 extern ShortTimer usb_timer;
+extern bool processing_tcode;
 extern bool homing_flag;
 extern bool loading_flag;
 extern unsigned long total_filament_used;
diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index a0bcb7c27..174921207 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -312,6 +312,7 @@ unsigned long stoptime=0;
 ShortTimer usb_timer;
 
 bool Stopped=false;
+bool processing_tcode; // Helper variable to block certain functions while T-code is being processed
 
 #if NUM_SERVOS > 0
   Servo servos[NUM_SERVOS];
@@ -8535,7 +8536,9 @@ Sigma_Exit:
   */
   else if(*CMDBUFFER_CURRENT_STRING == 'T') {
         strchr_pointer = CMDBUFFER_CURRENT_STRING;
+        processing_tcode = true;
         TCodes(strchr_pointer, code_value_uint8());
+        processing_tcode = false;
   } // end if(code_seen('T')) (end of T codes)
   /*!
   #### End of T-Codes
diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
index ed501e6f9..309b2936b 100644
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -5376,7 +5376,7 @@ static void lcd_main_menu()
         MENU_ITEM_SUBMENU_P(_i("Preheat"), lcd_preheat_menu);////MSG_PREHEAT c=18
     }
 
-    if (mesh_bed_leveling_flag == false && homing_flag == false && !isPrintPaused) {
+    if (mesh_bed_leveling_flag == false && homing_flag == false && !isPrintPaused && !processing_tcode) {
         if (usb_timer.running()) {
             MENU_ITEM_FUNCTION_P(_T(MSG_PAUSE_PRINT), lcd_pause_usb_print);
         } else if (IS_SD_PRINTING) {
@@ -5398,7 +5398,7 @@ static void lcd_main_menu()
             }
         }
     }
-    if((IS_SD_PRINTING || usb_timer.running() || isPrintPaused) && (custom_message_type != CustomMsg::MeshBedLeveling)) {
+    if((IS_SD_PRINTING || usb_timer.running() || isPrintPaused) && (custom_message_type != CustomMsg::MeshBedLeveling) && !processing_tcode) {
         MENU_ITEM_SUBMENU_P(_T(MSG_STOP_PRINT), lcd_sdcard_stop);
     }
 #ifdef TEMP_MODEL