this is meant to solve the problem of native menu bar overlapping
w/ non-native, as well as the inability to place an object or select
text dragging the mouse cursor w/ LMB pressed

Change-Id: I29f590ebf79d1ecc7e17b402125384cf13774bf3
Reviewed-on: https://gerrit.libreoffice.org/58171
Tested-by: Jenkins
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>