While testing the [focal branch of the Warnapp](https://gitlab.com/S60W79/warnapp-deutschland/-/tree/focal) on the Pixel 3a I noticed that the push messages didn't appear when the app was in foreground. The message arrived due to the lomiri-push service logs, and there were no error messages but no popup, message or similar appeared. When the app is in the background or not open, the past messages - sent when the app was in the foreground - aren't appearing, but newly sent messages do appear.