In game #97008327, I was mid-turn when my opponent said "bullshit" and resigned (there had been no communication up to this point outside of playing cards, which we were both doing with reasonable timing.) When I went to click "continue with bots" it told me "this command requires a table." I assume that my opponent either kicked or banned me (a rather childish response to your opponent's deck working well and/or having good luck, but whatever, that's not the topic here). Ideally it would be nice to be able to finish a game with bots even if this happens, since I wanted to see whether this deck was going to work in the end or not.
I'm not sure what happened in this case, generally the feature seems to work, I just tested it. Unfortunately from other reports it seems that sometimes the server that is responsible to get you the right data between games is sometimes not correctly doing that, so errors like that happen.