Screenshot

+++ This bug was initially created as a clone of Bug #38673 +++

See the attached screenshot.

It happens when I use Google Chrome 21.0.1180.57 (but not if I use Firefox 14.0.1) to access
https://www.mediawiki.org/wiki/Making_MediaWiki_Mobile_Friendly/List_of_portal_pages_with_problematic_two_column_layouts?diff=568888&useskin=vector
and
https://www.mediawiki.org/wiki/Making_MediaWiki_Mobile_Friendly/List_of_portal_pages_with_problematic_two_column_layouts?diff=568888&useskin=vector
and press CTRL+[+] to make the font size bigger or CTRL+[-][-] to make it smaller. In the normal size the scroll bars are not displayed.

MediaWiki.org is running MW 1.20wmf8 (1b28f55).

Version: unspecified
Severity: minor
URL: https://www.mediawiki.org/wiki/Making_MediaWiki_Mobile_Friendly/List_of_portal_pages_with_problematic_two_column_layouts?diff=568888

Attached: