Ofcourse a set the criteria.value aswell.
I have tested to hardcode a searchcritera for a block with a string property and that works as expected. A search for a PageReference property directly on a pagetype also works.
I've reported this as a possible bug to the support so I guess I will have to wait and see.
I have created a scheduledjob where I do a FPWC call to find pages with a localblock property with a specified value.
The blockproperty is of type PageReference but uses a EditorDescriptor dropdown to set the value from the editor point of view.
Thought this should be very straight forward but I don't get any hits at all.
Reguired = true