When detaching mask, the graphic is expected to restore to unmasked state immediately. If I detach by dragging to above this is no problem. But if below, the masked residues remains on the screen until I click/drag/zoom around multiple times for it to update to unmasked state. The same happen if using undo to revert from detached mask that was dragged to below.
mask_on_off.mov
100000-1.afdesign