Both Chrome and Firefox run in a single window which you can focus full screen if you want, what's the problem? If there is a complaint about tiling window man

Both Chrome and Firefox run in a single window which you can focus full screen if you want, what's the problem? If there is a complaint about tiling window managers it's that applications like Inkscape or Gimp which have tons of floating windows tend to not render well. Though most WMs have solutions to this.