Thread:Project:Support desk/MWSuggest box no working correctly following upgrade from 1.18.0 to 1.21.1

When you start typing in the search box the suggested page titles are being cut off if the page title is longer than the search box (instead of resizing past this point). This was resizing correctly before upgrading to Mediawiki version 1.21.1. I have copied back the Skins and Vector Extensions folder from backup but still has not fixed this. I have also tried a different skin (we are using Vector) but it still does the same. Any suggestions would be hugely welcome.