memory leak with input key selector

Hi, adding an Input Key Selector to a widget blueprint generates next warning after compile(sometimes it does after play and reopen the blueprint).
Warning Leak Detected! InputKeySelector_0 ( InputKeySelector ) still has living Slate widgets, it or the parent Overlay_0 ( Overlay ) is keeping them in memory. Release all Slate resources in ReleaseSlateResources().

addicionaly, it doesnt capture mouse wheel up/down