We will investigate this issue.
But when you add the descriptors directly
to RadDomainDataSource you should be able to use any number of nested CompositeFilterDescriptors -- is that not the case? Can you please try this -- do exactly the same but do not add the CompositeFilterDescriptor to the grid but to the RadDomainDataSource.FilterDescriptors. Isn't this working properly?
the Telerik team
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