#expected result:
Click on MenuButton and verify that dropdown should show at correct alignment.
#Actual result:
Click on MenuButton and verify that dropdown does not show at correct alignment. please see the attached screen shot

#platforms have the same issue:
win xp
mac
Linux

#Steps to reproduce:
1)Open the graphics/api/control/menubutton/MenuButtonTest1.fx
2) Click on MenuButton
3) Verify the screenshot

You will notice this issue.

added information:
On Mobile, the drop-down does not appear because popup is not yet implemented on mobile.

#Affected tests:
graphics/api/control/menubutton/MenuButtonTest10.fx
graphics/api/control/menubutton/MenuButtonTest1.fx
graphics/api/control/menubutton/MenuButtonTest16.fx
graphics/api/control/menubutton/MenuButtonTest17.fx
graphics/api/control/menubutton/MenuButtonTest24.fx
graphics/api/control/menubutton/MenuButtonTest25.fx
graphics/api/control/menubutton/MenuButtonTest3.fx
graphics/api/control/menubutton/MenuButtonTest4.fx
graphics/api/control/menubutton/MenuButtonTest6.fx
graphics/api/control/menubutton/MenuButtonTest7.fx
graphics/api/control/menubutton/MenuButtonTest8.fx
graphics/api/control/menubutton/MenuButtonTest9.fx
graphics/api/control/splitmenubutton/SplitMenuButtonTest1.fx
graphics/api/control/splitmenubutton/SplitMenuButtonTest11.fx
graphics/api/control/splitmenubutton/SplitMenuButtonTest14.fx
graphics/api/control/splitmenubutton/SplitMenuButtonTest18.fx
graphics/api/control/splitmenubutton/SplitMenuButtonTest20.fx
graphics/api/control/splitmenubutton/SplitMenuButtonTest21.fx