UpdatePanel postback full page reload

On my journey from SharePoint 2007 to SharePoint 2013 occured very strange problem. The project which I was migrating was using ASP UpdatePanels in combination with GridViews. The problem was that, if i clicked on some postback control in UpdatePanel, sometimes it made full page reload and sometimes classic postback refresh. I’ve spent several hours … Read moreUpdatePanel postback full page reload