I am really sorry for the inconvenience!
Yes, this is a known issue. JustMock can't attach itself to dotnet.exe. It is a known issue, already logged in our system.
When you have the profiler enabled, it tries to attach itself to every .NET process. Unfortunately it fails to attach to dotnet.exe. That being said, we suggest you keep the profiler enabled only for testing sessions and disable it when you are done.
There is a another workaround - we have blacklist configuration with processes that JustMock shouldn't attach itself to. You can add dotnet.exe to
"C:\Program Files (x86)\Telerik\JustMock\Libraries\CodeWeaver\32\ImageBlacklist.cfg"
"C:\Program Files (x86)\Telerik\JustMock\Libraries\CodeWeaver\62\ImageBlacklist.cfg"
Once again, I am really sorry for the inconvenience!
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