Hi, I got this problem: I got project A, there is class/file AA with public property P, this class is not used anywhere in project A, I got another project B and there I've added the file AA from project A as a link. I use the class AA and the property P in project B. But then I click on the P property and use Find Usages, nothing is found. I guess the Find Usages function is broken when file is added as link into other projects. This shoul be fixed imho.
Edit: tested on R# 6.1 RTM and VS 2010 SP1