I discussed further your issue with our developers. Unfortunately our statement about RadRibbonView control is that we aim to distribute ribbon which behave and looks as close as possible to the ribbon control used in Microsoft Office 2010. If you check the split buttons there, you will notice that there is no default margins between them. Please check the attached screenshot for reference.
Please send me a screenshot showing the margin mentioned by you earlier. In some panels there is a default value for the exposed ItemSpacing
property. For example in RadOrderedWrapPanel it is set to be 3. But unfortunately in our RadCollapsiblePanel
it is 0.
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