From 0b0ba7dcf612a5ae0f59d3e3697e2baff8ce4464 Mon Sep 17 00:00:00 2001
From: Giuliano Zaro <3684609+GMagician@users.noreply.github.com>
Date: Wed, 20 May 2020 22:28:02 +0200
Subject: [PATCH] Fix LCD throttle issue (#18055)

Fixes #18044
---
 Marlin/src/lcd/ultralcd.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/src/lcd/ultralcd.cpp b/Marlin/src/lcd/ultralcd.cpp
index 76aa773cd..12c005a91 100644
--- 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);
     }