I have encountered some other issue here. text of the button is not displaying in this case.
I have set DrawText property as true, UseCompatibleTextRendering as true and TextImageRelation as true. still the text is not displaying only the image is showing. Could you please go thruogh the same project again
attaching the previous link https://feedback.telerik.com/winforms/1480197-event-not-firing-in-commandbar-button-in-radcommandbar-button