[RedtailPinny]

Currently, Nest Flight has two clauses: One, you jump into a plant field object and gain X evade, or you become airborne. You don't gain any of the evasion for jumping into a plant field object (I tested by jumping into a flower spawned on the battle map), but you also don't go airborne, meaning the game knows you're suppose to be triggering the Evasion boost, not the airborne boost.

[Neus]

I tested this, and it worked fine for me. You get the evade via the Disengage status.