Not sure I can describe this situation completely, because by the time I realized there was a problem, part of it had already happened. Anyway:
It's before the flop. Tycho has the most chips on the board, and he goes all in. Max and Strong Bad have more than me, and the Heavy has less. I call, and then Max, Strong Bad, and the Heavy all call.
But instead of setting up side pots for the appropriate amounts and going straight to the showdown, the game instead hands back some money to Max, Strong Bad, and Tycho, leaving the Heavy and me as both being all-in.
The game then goes on with the flop and a second round of betting. Max bets again, and Strong Bad calls, putting him all in, but it skips Tycho. After the river, Max checks, and the game freezes up (Tycho, who had previously been skipped, would have been next to act).
After about 30 seconds, the game crashes to the desktop.