Navigation between stories doesn't respect project boundaries (i.e., matches steps in another project)

[jsiggy]

To recreate:

1. Create an IntelliJ project with very simple JBehave story and class to map to it.
2. Create a branch for this project (I'm using Git, not sure if the specific VCS matters or not). So at this point you have at least one story file and step file of the same name in the two different projects.
3. Modify trunk/master to remove one given condition in the story specification and the Java steps.
4. Branch .story file now shows an error/warning even though it has not been modified. This is because this .story in branch is somehow associated step file in the trunk/master project.
5. Navigate (cmd-b or cmd-click) from branch story file to the step file. Notice the navigation changes projects and took you to the trunk/master's step file of the same name.