diff --git a/packages/app/studio/src/service/StudioService.ts b/packages/app/studio/src/service/StudioService.ts
index c646cb1e..5f432b01 100644
--- a/packages/app/studio/src/service/StudioService.ts
+++ b/packages/app/studio/src/service/StudioService.ts
@@ -396,7 +396,10 @@ export class StudioService implements ProjectEnv {
         const previousScreen = this.#activeCodeEditor.map(state => state.previousScreen).unwrapOrNull()
         this.#activeCodeEditor.clear()
         if (this.layout.screen.getValue() === "code") {
-            this.layout.screen.setValue(previousScreen ?? "default")
+            // Defer the screen switch to avoid cascading UI updates during synchronous
+            // box deletion. Switching the screen triggers DevicePanel re-evaluation which
+            // clears mounts before remaining pointerHub onRemoved events have finished.
+            queueMicrotask(() => this.layout.screen.setValue(previousScreen ?? "default"))
         }
     }