So far I can’t seem to reliably reproduce it, but when it happens it is always after the screen went off for inactivity and the app was open. If you wait roughly 30 mins to 1 hour (because it doesn’t manifest for short periods between locking and unlocking) before unlocking the screen again, you’ll likely see that the app’s last view is now “frozen” and nothing new will render on the screen (but you do feel the haptics when you tap somewhere!).

This happens only with the Android app, the PWA never had this issue. I have this issue on both Android 13 and the 14 beta.