after IOS 16.2 for iPhone: Timestamps are not being deleted for Manually deleted messages.

Since i updated my phone from 16.2, I have noticed that message conversations now keep the time stamp of the deleted messages even after I permanently delete them manually. This was not the case on previous iOS 16 version nor is it the case on current iPad iOS version. Any thoughts… and just would like this fixed back to appropriate time stamp of last non deleted message in a given message conversation.

To reiterate, the respective timestamps for individual messages, are not being deleted when the message is deleted manually. This causes that conversation to remain at the top of the message list, when in fact it should move down below other conversations with more recent timestamps !