Comment #15 on issue 3754 by renggli: Omnibrowser's an extra horizontal scrollbar
http://code.google.com/p/pharo/issues/detail?id=3754
I looked at ConfigurationOfOmniBrowser this morning and it is definitely very outdated and mixes incompatible versions. Look at the images I linked to see what versions to load. Alternatively you can use the script <https://github.com/renggli/builder/blob/master/scripts/omnibrowser.st> to load a working configuration into a PharoCore image.
