How to stop a physics constraint immediately?

I spawned a Physics Constraint Actor, and assign its Component 1 and Component 2, thus started a constraint, it works perfectly.

But, when I want to stop this constraint, I called DestroyActor for that Physics Constraint Actor, it is destroyed, but the constraint remains for a period of time before vanishing.

Is there any method to let it go away immediately?

My only clue is ConstraintData->release(); in FConstraintInstance::TermConstraint(), I’m guessing this release() does not end the constraint immediately, but in some queue.

boo…I’m wondering if there is anybody except the Bug Report section…