Fix LCD throttle issue (#18055)

Fixes #18044
2020-05-20 22:28:02 +02:00 · 2020-05-20 22:28:02 +02:00 · 0b0ba7dcf6
parent 7be748b9b7
commit 0b0ba7dcf6
1 changed files with 1 additions and 1 deletions
--- a/Marlin/src/lcd/ultralcd.cpp
+++ b/Marlin/src/lcd/ultralcd.cpp
@ -881,7 +881,7 @@ void MarlinUI::update() {
    // Instead of tracking changes just redraw the Status Screen once per second.
    if (on_status_screen() && !lcd_status_update_delay--) {
      lcd_status_update_delay = TERN(HAS_GRAPHICAL_LCD, 12, 9);
-      max_display_update_time--;
+      if (max_display_update_time) max_display_update_time--;  // Be sure never go to a very big number
      refresh(LCDVIEW_REDRAW_NOW);
    }