It seems that anything that is not the cube container extension only adds 2 SU. I've only tried this on HVs and SVs but it happens for both. The regular cube extension adds 125 SU but everything else only adds 2 SU (doesn't matter which shape). I tried this on both ammo controllers and container controllers. I'm not sure if this was intended but could not find anything that specifically noted this in the patch notes.
