I could not replicate the issue. Which doors did you tested with, and was it for your own faction. If not did you verified that the AI was disabled. How did you reloaded the map ? Was it a save load or in the editor ?

I couldn't change the shader as it would have a too big impact. I however added the outline as units/props get for chasm to make the selection clear

I could not replicate. If that is still an issue that persist, please upload your log ,and a save file on which the problem appears please : )