diff --git a/ui-tui/src/lib/viewportStore.ts b/ui-tui/src/lib/viewportStore.ts
index 58e24ab87c5..0281e059b9c 100644
--- a/ui-tui/src/lib/viewportStore.ts
+++ b/ui-tui/src/lib/viewportStore.ts
@@ -42,7 +42,7 @@ export function getViewportSnapshot(s?: ScrollBoxHandle | null): ViewportSnapsho
 }
 
 export function viewportSnapshotKey(v: ViewportSnapshot) {
-  return `${v.atBottom ? 1 : 0}:${v.top}:${v.viewportHeight}:${v.scrollHeight}:${v.pending}`
+  return `${v.atBottom ? 1 : 0}:${Math.ceil(v.top / 8) * 8}:${v.viewportHeight}:${Math.ceil(v.scrollHeight / 8) * 8}:${v.pending}`
 }
 
 export function useViewportSnapshot(scrollRef: RefObject<ScrollBoxHandle | null>): ViewportSnapshot {