Other than the fact that no button appears at all, this is a wonderful extension.

Thank goodness for this add-on. The on ly thing I don't like about it is it hasn't been updated for HD monitors which causes it to be blurry. Not a biggie but it would be nice to have crisp and clear like all the other buttons.

Would be more useful if it had keyboard shortcuts like the counterpart in Chrome. I mostly use them instead of clicking the buttons.

It works, but I'd rather have the control be when I click on the open tab option to close the left tabs, not a button on the bar

おぉ、復活していたのですか。ボタンごとにアドオンが分かれているというのは少々面倒ですが、さほど手間がかかるわけでなく些細なことです。以前と同様にタブのクローズ操作ができるようになって感謝しています。

Thank you very much for updating!

このために57へのアップデート待ちしてました有難うございます！！！
左側の閉じるメニューもお願いします。

These simple buttons are so great, I painfully missed them when Firefox Quantum was released. Thanks a million!