Steps to reproduce:

• start Creator with clean settings (or not having set up gerrit settings)
• go directly to 'Tools' -> 'Git' -> 'Remote Repository' -> 'Gerrit...'
• on the Settings page for Gerrit do not change any setting - but you can switch to other pages/categories
• hit 'Ok' -> if you're no more on the Gerrit page before hitting 'Ok' you're be here back again
• leaving settings is possible only by hitting 'Cancel' now or by entering a username