Thread:Project:Support desk/Blue gap in WikiEditor under first toolbar

I have just upgraded a MediaWiki installation from a version from 2007 (1.11 I believe), have migrated the database and content. (Started with a fresh install of the latest version and dragged/dropped some folders (images, extensions etc) to the new installation. I have however started with a fresh skin, since the old one is incompatible with this version.

Using the guide here...

http://blog.redwerks.org/2012/02/28/mediawiki-subskin-tutorial/

...I have created the subskin with no styling modifications. I have now ended up with a large gap in the WikiEditor, coloured blue. It seems that this gets smaller as the window height decreases, however I cannot for the life of me work out why this is happening. At the bottom of this blue gap is the Advanced toolbar.

I can't see how creating this sub theme would make any difference to the behaviour of the WikiEditor.

Please see the below screenshot:



If I change the theme back to Vector, the problem goes away.

Unfortunately this is an internal wiki so am unable to provide a link.

Any more info, please let me know. I'm running the following:

MediaWiki	1.25.1 PHP	5.5.11 (cgi-fcgi) MySQL	5.6.25-log

Thanks