I'm not sure why I can't return any intersections for this door on Livonia when it's open:
(Update: I tested more doors on Livonia; almost all of them have this issue, which means this bug probably occurs with all "door" objects)
Here, I'm using a simple test code to return the intersections with the "GEOM" lod (see the Steps to Reproduce)
{F1893758}
However, the object clearly has a surface there in the Geometry LOD (it also blocks the player's movement, even if crawling):
{F1893761}
Note that even though I've shown a single line here, it doesn't return any intersection at all for the left part of the door.
If you close the door, the command works correctly.
I'm not sure what's wrong here. But I think the command is broken (or maybe a bad LOD?)