which isn't news, but...

with focus follows mouse enabled, activate filter menu of a calc autofilter.
Move the mouse around and enter the menu, menu pops down because there are
configure and mouse events which indicate that the position of the main
application window has "moved"

when LibreOffice detects the window has moved, it closes the windows
popups, so the menu disappears.

Change-Id: I2d1aa4a51153002c925e2dde4402da2d84e52de5