It does the job, but as someone that uses vertical tabs on the left, I kinda hate the fact that the space switcher is in the top right of the browser. I came from Arc Browser and it's managed perfectly well there —only reason I'm back to Mozilla is becasue Windows support from the company is very bad in Arc and it's working very bad lately—.

desperately needs support for keyboard shortcuts. need the ability to custom order workspaces instead of just sort alphabetically. other than that its really good.

After switching from Opera GX, I was really missing the workspace function. This add-on isn't ás good, but gets the job done. What I'm missing most is a keyboard shortcut to switch between the workspaces. So, @developer, could you please implement that! :)