I have a very strange problem with a slider, here the situation :
I have a radgrid with paging enabled in slider mode, but when I load the page the drag handle is not at the good position, it's at the left of the decrease handle of the slider (see the pictures attached). The strange thing is that it does not happen in every screens. The very strange thing is that only happen the first time the screen is loaded, if I move the drag handle and change the page of the grid and then if I go back to the first page the position of the drag handle is correct, and if I leave the screen and come back the drag handle will be in the correct position. But if I clear the cache and come back the position is incorrect.
This problem occurs after we changed our version of Telerik, we were in 2008.3.1314.20 and we moved to 2013.1.417.35 Telerik version for ASP.NET AJAX.