Still has some rough edges in Firefox. The biggest annoyance is that the New Tab page doesn't work, just shows a frozen search input, and that there's no option to use the extension to manage workspaces without using it for the new tab page.

Edit: I've tried re-installing after the fix, but I'm still having the problem. The search box on the new tab page is not functional, and there is no option to use a different new tab page while using Workona. Disappointing.

Edit 2: New tab still not working, and now opening workspaces in new windows isn't working either. That's the main feature I use this app for, so it's pretty much useless until that gets fixed.