Why can't I see the listed button? It can only undo the last close tab with a click.

works just as intended!

Does not show any list of closed tabs, only "Restore All Tabs".

FF 70 broke it

Very useful add-on! I`m searchin for smth like that instead of undoCloseTabs
https://infocatcher.github.io/Custom_Buttons/install/undoCloseTabs.html

I`ll be just happy if you add ability to delete tab from list by right click on it

Sort of does what I'm looking for. It seems to be limited to 9 recently closed tabs even though the settings suggest it can allow 25. The add on that I had with the old FF allowed over 100.

where is tab closed history? right click on mouse.

Thanks. Please add tooltip with url on mouseover.

best add-on i found for this purpose
after upgrading to 57+

missing:
- option to clear the list
- closed "new tab"s shouldn't show up in the list

convenience:
left click = restore last closed tab
right click = open list
but i think mozilla destroyed the old right click function in the toolbar

One of the first things I add to Firefox on a fresh installation.
All of Button Guy's stuff is quality.