If your shapes are 100% readonly, you can set the IsEnabled prop. to False, which will prevent the Hit Test service and so the panning will work everywhere.
Also note that you can change the short keys for the panning (if CTRL is not ok for you).
On a side note, we're considering to implement Scrolling option - you can vote and check the backlog item here.
All the best,
the Telerik team
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