I am having a similar problem and the work around does not work.
I have a grid inside a tab contentpane and it overflows. I want the tab to add scroll bars when the grid overflows. The scrollbar adds successfully but the content still overflows.
Where i can Use that property
ContentPane.EnableRelativeLayout=true.
There is no property in ContentPane Attruibute. and then The Next Step
<ContentTemplate>
<div style="width:100%;height:100%;position:relative;overflow:auto;">
...
</div>
</ContentTemplate>
This Coding also not responding .. same output only shows