Hi,
I tried this on the websamples (websamples.thinkgeo.com/webeditionsamples/Content.aspx?SampleId=RestrictedExtent&Name=Restricted%20extent)
This was one of the bugs i reported ages ago.
If you notice, you cannot pan up and down using that websample but if you click on the world icon, other areas are displayed.
The purpose of using the restricted layer is restricting the user within the valid coordinates. This is causing problems because i am getting map data from another source and passing invalid coordinates will just crash Mapsuite.