Sometimes, when closing firefox, two processes remain open. When I want to open firefox again, the error 'Firefox is already running but does not respond' occurs. When I deactivate the extension, the error disappears. Tested on two different computers. Otherwise, great.

Have to experiment more, a bit dissapointed, at this moment, sites as descargas2020.com are still unbrowsable without noscript or ublock... malwarebytes could not do nothing with it...

Every time I closed Firefox it showed me a message that it had not closed properly, I had to uninstall Malwarebytes extension and the problem was solved.
It also does not work very well against advertising and pop-ups

I'm a pro user and the extension seems to block pro web protection from starting. Makes sense, but it causes pro to always object

Please, I would like to see in next versions, details about what the add-on detects (malwares) or blocks (trackers). We see the number, not the details of the activity, as in Ghostery