After reading a text message I back out and the list has jumped to messages that are months old, a different location in the list of messages. Just got a new phone and this started to happen. I have done a full restart of the the phone and have not found anyone else with this issue. Any help would be greatly appreciated.
Thank you for posting in the Apple Support Communities. From our understanding, when exiting out of a message thread in the Messages app, it unexpectedly brings you back further down the list of message threads. We're here for you.
We recommend closing, then reopening the Messages app. Doing so might help refresh the app's connection with the network. Here's how:
Close an app on your iPhone or iPod touch
From there, check for a software update to be sure your new iPhone is fully updated to iOS 15.0.2. Keeping your device updated is important to be sure that it receives all the latest fixes. If an update is available, be sure your backup is current to a computer or to iCloud.
How to back up your iPhone, iPad, and iPod touch
Update your iPhone, iPad, or iPod touch
We hope this information is useful. Kind regards.