There is not anywhere to post a performance problem. All of my chats are working fine except for one. When I click on it, everything freezes up. The other chats work fine, it is just one. I cannot modify the name or delete that chat. I have tried everything I can think of from clearing cache, rebooting, and used another browser as well as device. Is this a known issue? I just want to bring it up to help make the experience better for all.