From d8ff80a4436139de61a78020fbcc1316c5374a0d Mon Sep 17 00:00:00 2001
From: Karl Seamon <bannanafiend@gmail.com>
Date: Thu, 10 Feb 2022 10:48:43 -0500
Subject: [PATCH] fix(cdk-experimental/column-resize): Fix bug in hover logic
 introduced by IE cleanup (#24396)

---
 src/cdk-experimental/column-resize/column-resize.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/cdk-experimental/column-resize/column-resize.ts b/src/cdk-experimental/column-resize/column-resize.ts
index a1e354f95445..273f12e656ee 100644
--- a/src/cdk-experimental/column-resize/column-resize.ts
+++ b/src/cdk-experimental/column-resize/column-resize.ts
@@ -80,7 +80,11 @@ export abstract class ColumnResize implements AfterViewInit, OnDestroy {
         .subscribe(this.eventDispatcher.headerCellHovered);
       fromEvent<MouseEvent>(element, 'mouseleave')
         .pipe(
-          filter(event => !!(event.relatedTarget as Element)?.matches(RESIZE_OVERLAY_SELECTOR)),
+          filter(
+            event =>
+              !!event.relatedTarget &&
+              !(event.relatedTarget as Element).matches(RESIZE_OVERLAY_SELECTOR),
+          ),
           mapTo(null),
           takeUntil(this.destroyed),
         )