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I have noticed that when I am editing a cell in a RadGridView, I have to click on buttons elsewhere on the form (RadRibbonButton or RadRibbonDropDownButton) twice to get their code to run. This is not the case with other controls like RadTabItem or RadPanelBarItem. Is this a bug or expected behaviour? (RadRibbonComboBox also behaves strangely - showing the list only briefly on the first click!)