bad ascent in the common case is probably fixed with tdf#107249

Change-Id: I0a06de06cb07277c50dcffd1b6a1121398e84e42
Reviewed-on: https://gerrit.libreoffice.org/42328Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>