The extension doesn't support pinned tabs, which is what I was hoping to use it for. I have a lot of different groups of pages that I use for different projects, and pinned tabs are common in my workflow.

I was hoping I would be able to create different group of pinned tab (e.g. a group for work tabs, a group for personal tabs and a group for x other project), but I can't.

Another small nitpick is that all of the icons are near black, which makes them hard to read over dark mode theme.