WELCOME ABOARD!
I think it's just your game, as F10 gets there fine for me.
One thing you can do is look in the game files, under Data/Cfg/Commands_en. Scroll down to
[Cmd19]
Name=Deckgun_camera
Ctxt=1
MnID=0x3F020005
Key0=0x79,,"F10"
Page=0x38000000,3707
GoBack=Conning_deck_camera
That's the way it should look. If it looks different then you need to change it.