I tested it with a 3 player game, all humans, no bots. Example game is #8879253, where Ingix is about to play a Tournament, with Ingix2 and Ingix3 both having a Province in hand (Turn 18-Ingix). Player order is Ingix, Ingix2, Ingix3.
In that case, once Ingix has played the tournament, if Ingix2 has the Tournament autoplay set to "Always reveal Province", the game becomes stuck.
a) The autoplay settings for Ingix3 seem not to factor in any way into the question if the game will become stuck in the described scenario.
b) It seems the bug only occurs if both Ingix2 and Ingix3 have a Province in hand to reveal. Especially the case where Ingix plays Tournament, Ingix2 has a Province in hand and Tournament autoplay set to "Always reveal Province", but Ingix3 has no Province in hand, does not lead to a stuck game. This can be verified in Turn 16-Ingix of that game.
AFAIK, the bots have at least some autoplay settings enabled, it seems like they have for Tournament. This explains why the problem occured in the game originally reported by JKRich that contained 2 bots.