The game was just fine but suddenly when I had to choose a category and I did so, somehow the question did not come. We then saved and restored, chose again and still no question came.

did you try f11? I know that sometimes it doesn't show the question and you need to resinchronize to get it back.

Tried, but the question did not show up for any of the players.

Maybe it only happened once due to a coinsidence or lag, and you can try again to play comfortably

I have played, I think, only that time. It was not lag, we could save the table and restore so the problem would get solved but it didn't, so we had to leave the table. I don't know of anyone who had this bug before, seems it cannot be reproduced either