If doors already exist in some of the quadrents but not all, placing a door will sometimes result in the following
If a door is already in the place clicked, it won't place the mirrors. The display suggests it should place doors as predicted, but nothing happens (Including no sound) on click
If doors exist in 2 of the 4 locations and a door is placed on an empty spot the door will place only there, leaving the 4th spot empty. This doesn't happen every time, but when it does happen with a given layout and location it will happen consistently. (ie removed all relevent doors, put two back, placed third with 4way symmetry on, 4th didn't appear)
All this was done with diagonal 4way symmetry, with the ship angled to match
#Doors don't place right on four way symmetry
light temple
severe epoch
if you can upload a saved ship or game where this happens, that would be helpful