Indeed it seems there is a problem with the top/right PlotArea border when the zoom/scroll functionality is enabled. We have updated your Telerik points for the report and we will forward it to our developers, however, we cannot suggest you a workaround for the time being.
As for the XAxis labels issue -- could you elaborate a bit more on your specific scenario as we are unable to reproduce the problem locally (see the attached sample application).
Looking forward to your reply.
the Telerik team