Upon further testing it seems that this version of automatically casted Weapon Charge goes even further and will not only cancel your airborne with its incompatibility but also keep you grounded even if you're /on top of an air shaft/ until you use another skill.
UPDATE: Since the autocharge manually casts Charge Weapon, it will now break invocations as soon as round starts.
UPDATE: Since the autocharge manually casts Charge Weapon, it will now break invocations as soon as round starts.