Result of search based on attributes of a Traits is not displayed correctly

when search based on an attribute of a trait, it returns the correct # of entities found, but list of matched entities are not shown.

for example, a traits ("mytrait") is defined with an attribute (myTraitAttr). then associate this trait to an entity with "myvalue" as the value of the attribute. When search with "mytrait.myTraitAttr="myvalue"", it returns 1 record matched, but doesn't show the entity in the list.