since...

commit 84392651
Date:   Wed Jan 3 23:27:16 2018 +0100

    tdf#114173 Preserve size of chart legend during xlsx export

Change-Id: Iebc936a0f490d6b707dfee0343732753f56728e7
Reviewed-on: https://gerrit.libreoffice.org/48147Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>