From f907de272aa8bbb5c9d25ae1473d395271e94044 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Sat, 25 Apr 2020 16:49:53 -0500
Subject: [PATCH] Fix mesh point sign

Most obvious part of #17670

Co-Authored-By: FilippoR <filippo.rossoni@gmail.com>
---
 Marlin/src/lcd/menu/menu_ubl.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Marlin/src/lcd/menu/menu_ubl.cpp b/Marlin/src/lcd/menu/menu_ubl.cpp
index e9fc6c525..31459cf21 100644
--- a/Marlin/src/lcd/menu/menu_ubl.cpp
+++ b/Marlin/src/lcd/menu/menu_ubl.cpp
@@ -41,7 +41,8 @@ static int16_t ubl_storage_slot = 0,
                ubl_fillin_amount = 5,
                ubl_height_amount = 1;
 
-static uint8_t n_edit_pts = 1, x_plot = 0, y_plot = 0;
+static uint8_t n_edit_pts = 1;
+static int8_t x_plot = 0, y_plot = 0; // May be negative during move
 
 #if HAS_HEATED_BED
   static int16_t custom_bed_temp = 50;