Works and does what you'd think, however with the downside that the "Number of undo items displayed in the popup"-config breaks the addon (uninstall, restart, install fixes it) when I change the default of 7 to 35. It does work with 24 though, and now I only miss showing the url when hovering over an item.

And for your information the addon takes you to its website unasked upon install and uninstall.