If I go to Settings - Apps - App battery usage I can sort by unrestricted, optimised and restricted (like I've set it some time ago). If I select an app, these settings are gone. I checked several apps, but I cant set the battery usage for any of them.
The system also says "1 App is active" - there used to be 5-6 and they're not showing up after I opened them.
This seems to affect the behaviour of the apps. HomeAssistant doesn't update the sensors in real time anymore and Nextcloud's Phontetrack doesn't track me anymore consistently.
I took a look at the update changes at https://grapheneos.org/releases but I couldn't find anything related to my problem. A restart also didn't solve this problem.