Thank you for contacting us.
This is very strange behavior. I tested it too and cannot reproduce the problem.
The language bar is used in this file ~[your site]/Sitefinity/Admin/Admin.master
- if you have modified this file, check if these changes are causing the problem.
If you send us your web.config
and ~[your site]/Sitefinity/Admin/Admin.master(.cs)
files, maybe I can reproduce the issue locally on my computer.
Hope this information will help you.
All the best,
the Telerik team