After i updated my Telerik ASP.NET AJAX to the 2018.3.910 version i got some bugs to my site.
When i push a tab or a button nothing at all happens and a '#' appears after my link in the URL.
This problem does not happen at all of my pages on my site. I have tried google this problem and looked here at your site but haven't found any solution for it.
I didn't had this problem before i updated the Telerik version.
Best regards, Tim