Yes. Since yesterday. But I thought it was related to a more worrying issue I've just discovered - I had a conversation with a user yesterday, but today, there's no chat history, and upon contacting the user I thought I talked to, he claims we've never spoken. Now, I'd understand if it was a scammer spoofing a well-known user, but for the chat history to have disappeared...the only explanation that comes to mind is that one user clearing a conversation deletes it for both parties. Which is a terribad idea, but it might explain the phantom notification - someone sent something, then cleared the conversation.
Edit:
Scammer topic clears it up, it really was a name-spoofing scammer. The chat history deletion thing, though...ffs, GOG.
Post edited February 13, 2016 by hyperagathon