Works! It would be cool if it was compatible with the groups. When the group is closed it arranges the tabs as it was open.

Perfect! Just what I was looking for. Thank you! :)

Work perfectly. Does exactly what it says in the description

super helpful for linux users

Thanks a lot for making this! It helps a ton on Linux.

Very useful addon, I don't understand why Firefox don't use it by default.

Absolutely superb add-on. Does precisely what it says it does and no more. Requires zero permissions.