From 1a8c3d7c94c6b4c54adc183f1270c30fd35097af Mon Sep 17 00:00:00 2001
From: Aram Drevekenin <aram@poor.dev>
Date: Thu, 6 Mar 2025 09:42:25 +0100
Subject: [PATCH] fix(grid): out of bounds removal when app does not update its
 scroll region on resize (#4045)

---
 zellij-server/src/panes/grid.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/zellij-server/src/panes/grid.rs b/zellij-server/src/panes/grid.rs
index bf7fcc14..62f0b5f2 100644
--- a/zellij-server/src/panes/grid.rs
+++ b/zellij-server/src/panes/grid.rs
@@ -1283,7 +1283,9 @@ impl Grid {
             let mut pad_character = EMPTY_TERMINAL_CHARACTER;
             pad_character.styles = self.cursor.pending_styles.clone();
             for _ in 0..count {
-                self.viewport.remove(scroll_region_top);
+                if scroll_region_top < self.viewport.len() {
+                    self.viewport.remove(scroll_region_top);
+                }
                 let columns = VecDeque::from(vec![pad_character.clone(); self.width]);
                 self.viewport
                     .insert(scroll_region_bottom, Row::from_columns(columns).canonical());