Hello, so I'm using Garuda, is a bit customized but the desktop layout is still the same. I have Firefox, and as you can see, the window buttons appear on firefox itself, but I have on the top panel a widget for the buttons, so what happens is that when I have Firefox Opened, 2 rows of window buttons appear.

But I was trying out Mullvad Browser, which is based on Firefox, and the Windows Buttons appear only on the top panel, so is possible to do it.

I wonder what I have to do to have it this way on regular firefox.