My guildies and I (and a few heroes) are doing the Moddock Crevice mission at the moment. It's the one where the general and that hunger demon ambush you in the corsair cave.
We triggered the cutscene while the party was a bit spread out. One guy was a long way behind.
After the cutscene the guy who had been behind was at the boss with his heroes, but me and the other guy who'd been the ones to actually trigger the cutscene had been put in a different area altogether. We tried to get back to the boss and our guildie, but after exploring the whole area we can only find two ways back, and both have locked gates. Atm the guy who's at the boss is trying to solo him with the heroes....hopefully we can still finish the mission that way. Strange bug tho.
The map below: the flag is where the boss is, where one guildie is, and where we should all be. Over to the right is the area we got teleported to: the blue lines are the gates blocking us. Strange, no?
Well the guildie who was in the right place was able to solo it (took bloody ages) and finish the mission for us, so that's a temporary solution for ppl who get this bug.