In HotDesign, clicking on the location shown in the screenshot and then clicking the Delete key on the keyboard throws a System.NullReferenceException: System.NullReferenceException HResult=0x80004003 ...
System.NullReferenceException: Object reference not set to an instance of an object. at RichCanvas.RichCanvas.OnItemsChanged(NotifyCollectionChangedEventArgs e) at ...
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