Yeah, as you figured out, a separate profile is currently the only workaround. In case you aren't aware, there is an easy way to quickly launch it though in Fir

Yeah, as you figured out, a separate profile is currently the only workaround. In case you aren't aware, there is an easy way to quickly launch it though in Firefox or Pale Moon - go to about:profiles and you can easily create / launch any profiles quickly in a new window.