Air RB - why can't I take off from airfield any more in bombers?

The Academy - Players helping Players
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1

grafik

Airfield is no longer a selectable option for low BR bombers. Even those that work better in a CAS role…
Is this a bug or a feature?
I cannot find any documentation of this change…

– E.

2

(Seems to be prevalent in Rank I bombers)