diff --git a/app/src/androidTest/java/de/jeanlucmakiola/clockula/ui/AlarmsInstrumentedTest.kt b/app/src/androidTest/java/de/jeanlucmakiola/clockula/ui/AlarmsInstrumentedTest.kt
index 0ec1af1..ace87ca 100644
--- a/app/src/androidTest/java/de/jeanlucmakiola/clockula/ui/AlarmsInstrumentedTest.kt
+++ b/app/src/androidTest/java/de/jeanlucmakiola/clockula/ui/AlarmsInstrumentedTest.kt
@@ -209,11 +209,13 @@ class AlarmsInstrumentedTest {
 
         // No confirmation: the list underneath offers the Undo instead.
         composeTestRule.onNodeWithContentDescription(string(R.string.editor_delete)).performClick()
+        // The delete runs on the application scope, which Compose's idling
+        // does not track, so the test waits for storage rather than for idle.
+        composeTestRule.waitUntil(STORAGE_TIMEOUT_MS) { stored(id) == null }
         composeTestRule.waitForIdle()
 
         composeTestRule.onNodeWithText("Work").assertDoesNotExist()
         composeTestRule.onNodeWithText(string(R.string.action_undo)).assertIsDisplayed()
-        assertThat(stored(id)).isNull()
     }
 
     @OptIn(ExperimentalTestApi::class)
@@ -225,13 +227,18 @@ class AlarmsInstrumentedTest {
 
         composeTestRule.onNodeWithText("Work")
             .performCustomAccessibilityActionWithLabel(string(R.string.action_delete))
+        composeTestRule.waitUntil(STORAGE_TIMEOUT_MS) { stored(id) == null }
         composeTestRule.waitForIdle()
-        assertThat(stored(id)).isNull()
 
         composeTestRule.onNodeWithText(string(R.string.action_undo)).performClick()
+        composeTestRule.waitUntil(STORAGE_TIMEOUT_MS) { stored(id) != null }
         composeTestRule.waitForIdle()
 
         composeTestRule.onNodeWithText("Work").assertIsDisplayed()
-        assertThat(stored(id)).isNotNull()
+    }
+
+    private companion object {
+        /** Delete and restore run on the application scope, outside Compose's idling. */
+        const val STORAGE_TIMEOUT_MS = 5_000L
     }
 }
diff --git a/app/src/main/java/de/jeanlucmakiola/clockula/ui/timers/TimersViewModel.kt b/app/src/main/java/de/jeanlucmakiola/clockula/ui/timers/TimersViewModel.kt
index 234130a..b672fde 100644
--- a/app/src/main/java/de/jeanlucmakiola/clockula/ui/timers/TimersViewModel.kt
+++ b/app/src/main/java/de/jeanlucmakiola/clockula/ui/timers/TimersViewModel.kt
@@ -100,8 +100,10 @@ class TimersViewModel @Inject internal constructor(
      * Through the engine, so a *ringing* timer cannot be deleted into a stuck
      * ring (D2). Still no confirmation; the snackbar's Undo now covers the slip.
      */
-    fun onDelete(timerId: Long) = launchOnEngine {
-        engine.delete(timerId)?.let(undo::offer)
+    fun onDelete(timerId: Long) {
+        // On the application scope, as the alarm list's is: a back press while
+        // the engine lock is busy must not drop a delete the user saw happen.
+        appScope.launch { engine.delete(timerId)?.let(undo::offer) }
     }
 
     /**