From the original post, that's not clear. The Outliner shows instances, not definitions. The screenshot shows two instances of the same component definition, as evident from the fact that they have the same name (if instances are not named individually, Outliner displays the definition name). Since the definition name is the lookup key in the model's component definitions list, I don't think it is possible to have two definitions with exactly the same name!
Using ThomThom's selection toys extension, one can select all instances of a component to accomplish what I read the original FR to say. This might still be a handy feature, though Trimble tends to ignore FR's that an existing extension already covers.