I usually have Faendal as my follower, and I noticed that he can unlock ANY chest, all the way up to Master, but will not touch any doors. Not even Novice doors. Even outside of any towns or settlements, a 100% legal lock to pick, he gets offended when I ask him to. It also matters not if he has lock picks.
Is this just with him, or do other followers work better? Has anyone else noticed this glitch?