I have tried and searched everything in order to figure out how to hide pre-populated separator in my horizontal grid (which is loaded via XML). I attached the picture. Please don't mind the style, I know it's ugly, but it's what the client wants :)
As I can see from the screenshot provided, you use the default RadMenu skin.
The separator that you want to hide is a part of the background image applied by this skin.
Could you please try setting the EnableEmbeddedSkins property of the RadMenu to "false"?
I hope this helps.
All the best,
the Telerik team
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