The problem shows up when you have short time left, AND you roll numbers such that the rules grant you an additional turn.

In my case, I ran to the bathroom and when I came back, I had about 12 seconds left in my countdown.
I quickly moved in time, but I was entitled to an additional roll. That roll then entitled me to an additional roll, which I quickly made, all the while the remaining 12 seconds kept counting down to zero. In this game, I had the (mis) fortune of getting about 5 additional rolls in my one turn, and it was humanly impossible to make them all in the few seconds remaining. Had I rolled a 2 or a 3 in my first couple of rolls, I would not have earned an additional roll and I would not have run out of time that game.

Proposed solution: Whenever a +1 turn comes up (ie when a 1, 4, or 5 is rolled), the interface should add about 4 seconds to one's timer so that he cannot go into Time's Up while he is actively playing.

Report closed automatically because it has not been upvoted or commented for a while.

Your bug has probably been fixed already, or was linked to a temporary failure of BGA service.

In any case, when filling a bug report, make sure to have an explicit title linked to the incident (ex: with error message), so other players can recognize it and vote for it.