Same thing here, tried using "V" to eject but didn't work at all. I just wanted to finish the campaign :(
searched on google, and still dind't find nothing close/similiar to this bug.
>>EDIT<<
So, i found out that you cant skip the entire mission, yes you will lose some story line but at least you get to the next one.
Left Shift down and then press the Numpad - (minus) key. Then let go and type "endmission", type it when the screen after the loading one apears, the one that has references from important people, thats when you type it in. You will pass the mission, and go to the next one "Air superiority". Hope it helped :)
*just in case you need more cheats: https://community.bistudio.com/wiki/ArmA:_Cheats#ENDMISSION