If I crouch down, and get full stealth, and no combat indicators, the door should be openable. Period. Anything else is a bug in my book.
I mentioned this a while ago in another topic that they sometimes bug out into the wall and become impossible to hit (even with AoEs).You can crouch all you want - the crocodiles are still aggroed and they're still trying to attack you for a while. Your options are to just stand by the door, patiently or go back and kill the crocodiles (which will take longer because running).
I'd say this is the overall best bet. I don't mind skipping stuff as long as it is defininetly not going to aggro. But if it does aggro or has a high chance to aggro, just kill it. While doing random dungeons, if I get Wayrest, I typically jump into the water just to kill them and then rejoin the group as they're killing first boss. Not taking any chances.Though, of course, best course of action is to kill all enemies you pull.
]I mentioned this a while ago in another topic that they sometimes bug out into the wall and become impossible to hit (even with AoEs).
It's the age old "I'm in combat even though I'm miles away" thing.
It's just odd that it's usually this door, in this dungeon.