1.by right-click on slider, multiple menu-windows can be opened at the same time
solution: change opened window to modal window.
2.close opened menu window after reslice
Change-Id: I4973e1cf4c2ecce83602417be051d249f1aae6a4
(cherry picked from commit 8890f1b3bdf8f1374136ec40e3f44de583c71e7f)
cf323d75f1