topologic_hydra Which GrapheneOS release are you currently using? You can check by going to Settings > About phone > Build number - please provide that full build number.
This was briefly an issue due to a change made in Android 14 but has been fixed already, several releases ago - the fact that you're experiencing this makes me think you might be on an old release and might need to update.
The reason why you might not have updated is because the updater might've downloaded the new update and then gave you the notification to reboot, but because it could be swiped away, you might've not seen it and therefore not updated.
I think if you simply update to the latest stable release, you should be golden.
You can see when this was fixed, on this release:
https://grapheneos.org/releases#2023102300
allow system apps to make sticky notifications again (important for System Updater to avoid users missing the notice to reboot after update installation)