For whatever reason, RP concerns I suppose, the Federation Nurse equivalent on the KDF side was made a Medic. So the description and ability are the "Increased crew recovery below 75%" but they only slot to the ground, and have no effect in space.
I'm having the same problem. I have several uncommon nurses with the crew regen ability that will not slot into the space slot, only ground. I think this is indeed a bug. If anyone has a workaround or a solution, I'd love to hear it.
I'm glad it's not just me, I bought a Medic off the exchange that cost me 1.3mil for the space ability of 150% crew recovery and she shows up under the ground section and I can't slot her any where. I have put in a ticket but so far no joy, has anyone else had this problem.
I also am having this same problem. After spending 1million EC on a Nurse with crew recovery space trait I found it would only equip to ground resulting in a waste of EC as ground has no crew to recover so it's pointless.