For some reason, I only get Android notifications when I boot up the phone (or restart Lipstick). I'm only expecting notifications from Facebook Messenger, no other apps. But they don't arrive on time. Instead they pile up and I get them all at once at the next start.

I had Android Notifications by Coderus installed previously. I uninstalled it only after upgrading to 1.1.9.28.

Has anyone encountered this behaviour? Any idea how to fix it (except factory reset)?