Fixes #13855

The small menu buttons on the left doesn't move downwards anymore when
the menu is expanded
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
(cherry picked from commit 42970596e763a9fe34815a6ddf835cdc29be9eb1)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>