[rush] Rush recycler task on Windows shows the PowerShell window when Windows Terminal is set as the default terminal application

[sachinjoseph]

The Rush recycler task on Windows uses PowerShell to purge folders in common/temp asynchronously in the background, but when Windows Terminal is set as the default terminal application, the PowerShell window is displayed.

Repro steps

1. Set Windows Terminal as the default terminal application. See steps here.
2. In a large Rush mono-repo, run rush install and then run rush purge. A PowerShell window that's executing the recycler task would be launched and would remain visible until the recycler task completes.

Expected result: The PowerShell window is not visible.

Actual result: The PowerShell window is visible.

Details

Windows Terminal does not respect the PowerShell argument -WindowStyle Hidden - this issue is tracked here.

Standard questions

Question	Answer
@microsoft/rush globally installed version?	5.62.3
rushVersion from rush.json?	5.62.3
useWorkspaces from rush.json?	yes
Operating system?	<!-- Windows
Node.js version (node -v)?	v16.13.1

[pwbriggs]

I'm not familiar with the "rush recycler," but this happens to me when rush update completes. A blank WT window pops up, and it disappears after a few minutes.

It appears this tooltip from Windows Terminal shows the command that's being run, if it helps:

Screenshot

Do you know of any workaround while we wait for microsoft/terminal#12464?