Sorry again if this issue has been pointed out before.
I faced an issue where those force-dark enabled apps are not take effect at the "cold start", but not "hot start". Force-dark only take effect when enter second or inner UI /Activity/Dialog. Which means that i have partial dark/white theme together on my apps (e.g: main UI page showed with white theme but inner page/dialog with dark theme).
MI9 MIUI 11 (Android 10)