The software sometimes does not work, especially if more than 10 tabs are open. Can you fix this bug?

Works every time

Ctrl + shift + T does the trick, but this extension still saves me tons of clicks by keeping a list of recently closed tabs, just like with how Firefox let's you hold the back button to go to a specific site in history (one of my favorite features).

This is the best of the "Undo last closed tab(s). Should be part of Firefox. Thank you.