Likely already known, but on mobile there will be times that during searching the page layout changes slightly, and once you connect you're presented with a broken page that doesn't display any text or let you chat, but once you refresh it's fixed. While similar to the chats that load normally but don't show any text, this one actually looks different.
I haven't yet experienced anything like this on desktop, but I don't use desktop much.
I'll update the thread if I'm able to get screenshots of this happening