Powershell start-process command is not running in detached mode with github action


I am trying to run following command using github action. Start-Process exits as soon as github action step is over.

     - name: Run test
        shell: powershell
        run: |
          start-Process -FilePath "C:\Program Files (x86)\SmartBear\TestExecute 14\x64\Bin\TestExecute.exe" -ArgumentList "`"C:\Automation.mds`" /project:`"Automation`" /unit:Main /routine:Main /r /SilentMode /e /version:1.00.04"

However, if I run the same command manually from powershell it works fine.