I recently upgraded my default templates to Fedora 33. I followed these instructions to create a disposable VM template from Fedora 33:
The template shows up in the Qubes menu, as “Disposable”. But when I launch it, instead of creating a “DispXXX” instance, it launches as “fedora-33-dvm” and remains persistent: if I open a web page, close the VM, then re-open it, Firefox offers to restore the session.
How can I make the DisposableVM nonpersistent?