Several of the current modular buildings don't provide a clarity on their orientation when being placed.
Long Range Scanner and Monument Base have no orientation provided.
Summary of current placement configuration (0.6.0.22650-635467222),
Long Range Scanner Base - can't determine which is 'front' (with display) of building.
Monument Base - can't determine which is 'front' (direction of robot) of building.
Blast Furnace - partial. Once known the stair orientation, can be determined orientation of input pipelines/upper walkway
Fracking Tower - no issue, 'panel' shown and orientation displayed during placement.
Air Intake - no issue, modular control determines 'front' facing.
Hot Air Stove - no issue, orientation displayed during placement.
Radio Tower Base - no issue, panel orientation displayed during placement.
Modular Storage Tank - no issue, omnidirectional building.