diff --git a/src/components/basic_table/collapsed_item_actions.tsx b/src/components/basic_table/collapsed_item_actions.tsx
index 89c2f6c2d72..cf1b0363de2 100644
--- a/src/components/basic_table/collapsed_item_actions.tsx
+++ b/src/components/basic_table/collapsed_item_actions.tsx
@@ -67,10 +67,11 @@ export class CollapsedItemActions<T> extends Component<
     });
   };
 
-  registerPopoverDiv = (popoverDiv: HTMLDivElement) => {
+  registerPopoverDiv = (popoverDiv: HTMLDivElement | null) => {
     if (!this.popoverDiv) {
       this.popoverDiv = popoverDiv;
-      this.popoverDiv.addEventListener('focusout', this.onPopoverBlur);
+      this.popoverDiv &&
+        this.popoverDiv.addEventListener('focusout', this.onPopoverBlur);
     }
   };
 
diff --git a/upcoming_changelogs/6145.md b/upcoming_changelogs/6145.md
new file mode 100644
index 00000000000..2f01be8f708
--- /dev/null
+++ b/upcoming_changelogs/6145.md
@@ -0,0 +1,4 @@
+**Bug fixes**
+
+- Fixed `CollapsedItemActions` ref callback not accounting for `null` value
+