app/src/main/java/me/zobrist/tichucounter/MainActivity.kt

@@ -94,9 +94,13 @@ class MainActivity : AppCompatActivity(), ISettingsChangeListener {
         }
 
         if (themeValue != AppCompatDelegate.getDefaultNightMode()) {
+            lifecycleScope.launch {
+                //  Give compose a bit of time to update the state.
+                delay(50)
                 AppCompatDelegate.setDefaultNightMode(themeValue)
             }
         }
+    }
 
     override fun onScreenOnChanged(keepOn: KeepScreenOn) {
         if (keepOn.value) {