The line of dead ends is longer than the dry dock is long. Is there something wrong with the dry dock?
EDIT:
Turns out the hitbox on the drydock extends infinitely out in the direction of the ship entrance.
After some testing, it would appear that the dead end extends along this entire row of doors:
The leading suspect on this is the dry dock from the next floor up.
Second floor above the room in question:
Have confirmed it's not a soft room cap:
I asked in the Warframe discord, and no one seemed to have an answer on what was going on.