Okay! It'll be a bit, but we'll need to pair with one of you to see the exact moment it happens, whether that be login or out. It'll take a creepy level of scrutiny, so we'll talk to the person before. The bug is old because we can't reproduce it. It doesn't matter what we do on a test server, it never happens.
We can only see it happening to you! No one is sure what's going on