Thank you for your feedback. Since Q2 2011 we have refactored the Drag and Drop internal functionality and introduced DragDropManager with API similar to .net build-in API that also raise the RadDragAndDropManager events. We have also added option to revert to the original RadDragAndDropManager mechanism using RadDragAndDropManager.ExecutionMode = DragExecutionMode.Legacy (needs to be set before intitalizeComponent - best in App constructor).
Regarding the issue - we have tried to reproduce it from our side, however with no success. Would it be possible to share some additional information about example in which this problem occurs, as well as the steps needed to get the issue.
the Telerik team
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