diff --git a/core/insertion_marker_previewer.ts b/core/insertion_marker_previewer.ts
index 6ed278c40..8998985a2 100644
--- a/core/insertion_marker_previewer.ts
+++ b/core/insertion_marker_previewer.ts
@@ -154,6 +154,7 @@ export class InsertionMarkerPreviewer implements IConnectionPreviewer {
     };
     const originalOffsetInBlock = markerConn.getOffsetInBlock().clone();
     renderManagement.finishQueuedRenders().then(() => {
+      if (marker.isDeadOrDying()) return;
       eventUtils.disable();
       try {
         // Position so that the existing block doesn't move.