Assert.Equals fails when comparing the same type

I'm running into an issue where a test is failing when running but succeeds when breaking into the test.

Assert.Equals(typeof(Plugin.Plugin), plugin.GetType());

When running the test the guids are different. The typeof call returns a guid of all zeroes while the GetType has the expected guid. If I set a breakpoint to that line the guids match. Has anyone encountered this? They are both coming from the same assembly so they should both match. This is using .net 461

Thanks.