This addons have a big bug, sometimes without any reason deactivate the javascript spoof, I add the photos, chameleon is active, spoof my browser but the site can detect via javascript original SO and browser, it's a big problem this. picture:

https://imgur.com/wisOh5O
https://imgur.com/G4aNRnd

With ras this bug is not present, it's only of chameleon, appaire that working and without any reason do not spoof.

I hope you can fix this problem. I see this bug from long time, usually i check many times in the sites if the spoof working e sometimes i find that do not working via javascript.