Resharper Run All Tests not working after upgrading to VS2017

Currently using:

JetBrains ReSharper Ultimate 2017.2.2 Build 109.0.20171006.122324
ReSharper 2017.2.20171006.123800

and vs2017   version 15.6.6

We were using VS2013 with the same version of resharper.  (we had issues with newer versions of resharper which is why we've stuck with the version listed above for now)

What I would do in vs2013 is just do menu:resharper/unit tests/run all unit tests.  This would create a new session for me automatically with all unit tests in the solution for me.  I'd stop running them as I didn't actually want them all to run, but this was the easiest way to get them all in there,  Generally I wouldn't have to do that again. I'd just open that session and all tests would already be there.  As I'd write or delete new tests, the session would automatically update.

We upgraded to VS2017 and I installed the same resharper as before, but now when I say to "run all unit tests", nothing happens.   Unit tests show up only if I actually open the file, and we have a lot of different unit test files and that'd get tedious to have to do that.  But not only that, the tests will also disappear from the list.  Not sure when and how, it's not necessarily when I close the file of tests

We are using MS tests, not nunit nor xunit.

thoughts?