I should confirm that this is a visual bug that requires our action. I logged it and you might track its status from our Feedback Portal (here
is link to it).
Till we fix the issue I can suggest the following workaround:
You might apply an implicit style that Targets the RadRibbonSplitButton
and is BasedOn RadRibbonButtonStyle -- this is required by our implicit styles theming mechanism and you might read more about it from this
help topic. Then as a setter of the style please apply Padding 1 1 1 2. like this:
"1 1 1 2"
Please mind that the style is Keyless and therefore it will be applied implicitly to all RadRibbonSplitButtons that you have.
P.S. You might find your Telerik points updated as a sign of gratitude for pointing this issue out.
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