Door prior to Wotan bugged

The bridge prior to Wotan more times than not is bugging out where people end up showing on the screen but they are off far away or cannot be seen. Twice in a row just now we had this happen and because not every enemy is dead we cannot move on to Wotan because of the shield over the door!!! Please figure out a way to fix this Gearbox as it is frustrating to have to kill yourself only to have to go through all that annoying trash again that may or may not get bugged…