Why blueprint's component visibility toggle in sequencer is not work?

Why blueprint’s component visibility toggle in sequencer is not work? Seems like it is working,but the object is still there.

I have the same problem. A skeletal mesh component on a blueprint. When I try to drive Visibility on the skel mesh component, it is not reflected in the viewport when scrubbing. Works in PIE though. Only Actor Hidden in Game tracks seem to cooperate with scrubbing.