How can I get RubyMine to not search outside the project?

Here's my RubyMine version...



I'm trying to use "Find in path..."

I right-click my project dir, choose "Find in path...", then under "Scope" I choose "Custom" and then I configure the search scope to include only the files that are relevant.

But when I execute the search, the results include Ruby files outside of the project itself (see screenshot).
How can I make it so that "Find in path" returns ONLY the files within my custom search scope and no other files?

Here is my custom search scope config...