MIG if you have a github account, use the "Found a bug? Let us know" link at the bottom of the page to report bugs, so that you'll be listed as a contributor on github
I reproduced this, overflow-hidden overflow-x-auto on parent element, most likely caused by #484
I've edited it for the upcoming update. If you don't want to wait, simply run this to immediately get the patch:
cd /usr/local/admin && git pull && service admin restart
@stefan please add it to changelog