I managed to reproduce the first reported behavior on the Overview demo of the ImageEditor, but not on a stand-alone page containing the control. Can you verify whether this is also the scenario tested by you? If so, I examined the issue in or online demos and it turned out to be connected with an additional CSS added to some demos, namely:
Removing it fixes the problem, as we have already applied the fix to our demos application.
Regarding the second problem - I can confirm that it is a bug in the ImageEditor control and it is now logged into our feedback portal. You can track its progress and vote for it here: The Export dialog format drop-down remains visible after the dialog is closed
I have also updated your Telerik points accordingly as a small sign of gratitude for the reported issues.
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