Recently a new sidebar appeared on Firefox on my desktop. I actually really liked the change because I have wanted to move my tabs to the side for a while. I had tree style tabs installed and I was a little annoyed that I couldn't disable the tabs on the top bar. But now I can! My laptop however does not have the new sidebar yet and when I look for updates it says there aren't any. My laptop has limited screen space and I much prefer to have this new ui choice but I can't enable it. I understand that they probably update new designs in batches to test the waters but is there a way to get around it and enable it on my laptop too? I use the same Firefox account for both so it seems a little counterintuitive to have different experiences on different devices on the same account. Also very much thank you for this change! It's something I've wanted for a while. I also have one little suggestion and that is to have the option for a similar feature to tree style tabs on the sidebar tab layout.