Wierd behaviour with Icon caching

* open app
* minimize app
* lock phone
* In the web GUI add a new application "test4". give it a icon.
* sent a message:
curl -X POST http://gotify./message -H "X-Gotify-Key: " -F "title=hello world" -F "message=test" -F "priority=4"
* unlock phone
* open the app

This message has now the same icon as the previous message (or no icon) and NOT the icon of the uploaded icon.
Even if you do a pulldown to refresh it stays incorrect.

Only a refresh in the hamburger menu seems to fix it.