It appears that if you save a photo from a Messages thread and then delete that thread, the photo will get deleted after your next iCloud Backup is performed.
MacRumors reports that the bug can be replicated via the following steps:
1. Save a photo from a Messages conversation to your Camera Roll. 2. Check to see that the photo has been saved. 3. Delete the Messages conversation the photo came from. The photo will still be in your iCloud Photo Library at this point. 4. Perform an iCloud Backup, and the photo disappears.
This is a pretty significant bug, especially because many users have automatic iCloud Backups enabled. We'd advise not deleting any threads in Messages until a fix is released. Unfortunately, the bug is still present in iOS 15.1 beta 2.
Hello
I am not a developer but I found it some bugs and problems in ios 15 iPhone 11 Pro.
Notes bug is always opening the last I created is not showing anymore my list with my notes!
Personal Hotspot is disappearing from settings after reboot the iPhone!!
Mail sometimes is showing empty page no emails:( is saying no massage selected on empty page!!! If you can raport to apple those issues. Please do it! Thank you