i have this problem along time ago . that military tunnels doors are blocked by something and can't enter the front main 2 doors .
i tried to remove the doors but thats did not work .
i tried different map but still .
any suggestions ?

video :
https://www.dropbox.com/s/m22irarq8maith6/RUST%202019.07.06%20-%2015.51.17.03.DVR.mp4?dl=0

any help ?

If you've wiped with a new map and it still happens then maybe one of your plugins is affecting it? Have you tried unloading all plugins and see if that helps?

Merged post

Today I had a player saying he was blocked from entering a cave, but then he discovered it was like an invisible low wall that he was able to jump over.

While some players are able to enter, others are not. This is on the same server. It's really odd. 

It happens because client think that door is closed (or server), it happens if you have any plugin that control doors (like AutoDoors).

It doesnt look real, but try to remove all plugins that controls doors movement and restart server

Nothing like this on the server. Sure it's not coincidental with reconnecting with the server to resync? Because doing a reconnect for the client enables them to enter again. Moments later, they appear to be desynced again. 

Merged post

Noclip triggers the bug instantly, possibly other things. No moving while noclip required, just mometarily in and out of noclip.

For what it's worth, putting terrain triggers over the doors solves the problem.
It occurred on our server now.