I have used this add-on for some time now, does exactly what it says on FF Nightly. However, in past week when launching browser fresh (not a restart/restore), the first non-pinned tab that has always opened with browser (home page) cannot be closed now. If tab's 'X' is clicked, the tab dims but remains and cannot be dismissed. Do browser restart and then the tab can be closed with 'X'. Does not happen with any other non-pinned tab, only with this one opened at launch. Disable this add-on and the issue goes away.

Works fine.

Works great! I tried some other solutions and add-ons before this and they didn't work, but this one worked perfectly.

please consider updating the extension (september, 2017)

good