macOS: How to keep an app and its new windows/dialogs always hidden? I am running a 3rd party app on my Mac that spawns new small in-app windows/dialogs/popups almost every 3 seconds, to show the progress of a specific command. These windows are closed automatically by the application.

The problem is that these in-app windows are shown on top of other apps. Is there a way of keeping them hidden all the time (I don't care about the shown progress)?

I have tried to hide the app itself, but it gets back to the visible state along with its in-app windows. There is no Hide option available in the app.

What can I do to handle this?
A convenient workaround would be to create a new desktop, move the app along with all the app windows to it and, leave it visible/maximized there.

If the app doesn't automatically steals focus to itself, this approach can resolve your issue.