Weird Message using U-2 planes for Air dropped Supplies

[Wiedrock]

How to reproduce:
take any T2 of GC41 and try to air drop supplies into Kherson using the U-2 planes (you need to move a CU there before).

[K62_]

U-2 transports can only drop freight at airfields.

[Joel Billings]

Likely something to do with their low transport capacity and another case of the wrong error message being displayed. I ran a test with the U2s and Li-2 group transporting to a unit, and although it said they sent the U2s, none were lost and no miles were flown (but they do transport to airbases). So yes, they only appear to be able to transport to airfields. There are only 2 U2 transport units in the game. We mostly left them out since their primary roles in the partisan war and as liaison aircraft is not needed in the game.