I'm using Intellj Idea Ultimate 2018,3.2 and I'm having trouble getting Find Usages and refactor to work across modules. I have set up an example yarn workspaces project containing a few typescript modules. If I do Find Usages or refactorings such as rename, I only get usages in the declaring module. Go To Declaration works correctly across modules.
example project: https://github.com/asammartin/workspaces-example