Thank you for the feedback. There really seems to be a problem with the DropDownPopup when you've zoomed the diagram and I've logged it in our PITS
under the name "DropDownPopup is not on the correct position if the application is zoomed"
and it'll be ready for tracking and voting tomorrow the latest.
Unfortunately I could find a good workaround so I can't give you any advise at the moment.
I've updated your telerik account and if you have more questions please feel free to ask.
the Telerik team
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