I am not quite sure if I understand the problem correctly but at this point I can assume that the SlidingPane doesn't slide because of the used DOCTYPE declaration - please, make sure that it is the following one:
|<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
In addition, can you please clarify what exactly do you mean by "
But I cannot see the slidingpane's content unless the slidingpane is open
If you still experience problems, it will be best if you open a new support ticket and send us a simple, running application which demonstrates the issue.
the Telerik team