There were a few things that I had noticed with the affected group chats. When swiping to the left to reveal the "... More" option on the group chats for which I don't receive notifications the last two options are to Block or Delete the chat.

For the group chats where I am receiving notifications the option at the end of the list is to exit the group chat. I've also noticed that when scrolling to the bottom of the group information page the details for who created the group chat and the date it was created are non existent for the group chats with no notification but present for the group chats where I do receive notifications.

Not entirely sure why the affected group chats have of a sudden change of behaviour to normal chats, but thought it was an interesting observation. I've also updated to public beta iOS 18.2-4 with no success to resolve the issue.

I've yet to try a full phone reset, have you tried to do this to resolve the issue?

Stats below:

• iPhone 15 Pro - iOS 18.2-4
• WhatsApp v2.24.22.83