I appreciate that fully but i can assure you that anything that blocks progression for players is a top priority.
There are several factors at play here.
First we need to identify where these occur and under what circumstances. Secondly we need to be able to reproduce it, which in these cases is not always simple as they are somewhat irregular and the doors work as intended the majority of the time.
Once we had located it and reproduced it, a fix is then made, integrated and deployed.
Due to the number of these issues found, it is an ongoing process to find and eliminate them one by one.
Don't read this as i'm diminishing these bugs by any stretch. They are frustrating to encounter (been there myself multiple times) and the fact that they are common is a problem in itself. I simply wanted to provide some "behind-the-scenes" insight into how they are identified and fixed as well why there are still a number of them present in the game.