Yep. I have it too. It is a rare bug. It seems to happen only to some players, and some players lag out slower or faster. It seems to happen in those big laggy teamgames. The "fake ping" it generates is not network lag.
It got introduced months ago, and it happens rarely enough for me to not usually be a problem. That said, when it happens, it makes the game unplayable. (I have a feeling around that time catching up to games became laggier and slower, but that might be just a feeling)
Btw, you can see who has the bug by pressing tab in the laggy teamgame. Which player has ping in seconds has it.