User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36 Steps to reproduce: When i click a radbutton then postback changing page url as /blabla.aspx?btnMsg_ClientState=&btnCarDetails=Sorgula&btnCarDetails_ClientState=&btnPrice_ClientState=&btnReject_ClientState=# .. First pop-up work but then break. There are 5 extra buttons and seems all in page url. Where is coming these query strings ? Ie Developer tools says: ScriptResource.axd... I cant find solution, please help.