On those same ships I've also had trouble getting normal seat powers showing. They appear to save, but on reload the power icons dont appear until you click on the blank box to change the power, the icon then loads in the background before you alter the power.
I also note that on Intel seats I have to click twice to get the powers selection menu to appear.
The Fed T6 Guardian's universal seat needs drop down menu.
Contortrix T5 and T5U engineering seats can't be populated either, shows blank list of powers.