this addon doesn't work well Puntuado con 3 de 5 estrellas

it does't compat with the addon---tab utilities
it can cause issue

Esta valoración es de una versión anterior del complemento (  Este usuario tiene una valoración anterior de este complemento.

More details

I've tested with the "tab utilities" add-on and I didn't see anything wrong.

Can you send me details at
I need:
* a description of the issue with the steps done
* the messages from the error console (please clear the previous message before to test the close of the duplicated tab).