1. Unable to change lockscreen clock style and colour. It lets me select them but when saving it goes back to how it was before.2. Routines & Modes are broken and this is, in my opinion, a crucial feature that needs urgent attention as none of it works at all.
Edit: Fixed by clearing routines & modes app cache
3. Changing the option of the new game booster access to notifications area isn't retained and resets back to floating upon restarting the game.
4. Volume slider UI (only using volume buttons) has the wrong output logo, it shows the speaker icon when using my buds4 Pro and it shows the Bluetooth icon when using the phone's speakers. This isn't the case for the control centre, works fine there.
5. Entire status bar disappearing intermittently for a few seconds then returning. I've also noticed my phone initiate the charging animation on the battery icon when my phone had not been put on charge.
6. Locking the phone while it was in landscape mode playing a game. It unlocks in portrait mode on the homescreen but when I opened another app such as WhatsApp it was stuck in landscape, had to unlock phone orientation and lock it again to fix it.
7. Not sure if this is a bug or an intentional design but the new location indicator doesnt show which app or service is using it upon opening the control centre. If it's intentional then possibly changing it to show the app or service is using it would greatly improve the feature. It also doesnt show which app or service is using the camera or microphone when the indicators pop up either.
8. When on lockscreen, the carrier name and notifications are not in their usual space in the left corner and shift more to the right leaving a gap.
These are the bugs I've noticed for now and will update further if I notice any more, it has been a smooth experience otherwise with no personal experience of any negative impact on my S26 Ultra's battery life and performance.