The observed by you behavior is not an expected one when RadWindow is used - it does not have an implemented internal logic for closing when Escape gets pressed, because of that we assume you were using one of the predefined windows. Please, check the attached video that demonstrates that.
Could you please, try to isolate the observed by you behavior in a sample and send it to us - thus we could be able to continue our investigation?
We are looking forward to hearing from you.
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