I also found that the start trick didn’t work and downloading a separate tool to complete such a simple task seemed excessive. After some additional searching I found this SO post which gave an answer that worked for my needs.
Just replace <actual-command-line-to-run> with your command. Remember to give the full path to the executable and encapsulate it in “quotes” if there’s spaces in your path.
powershell start-process <actual-command-line-to-run>