Apparently it has no hide/stealth feature. Some news sites won't let me read the content with Adguard active, but uBlock Origin seems to stealth through them unnoticed. So I switched back tu uBO.
I still use Adguard (paid version) on my mobile devices because it blocks ads from apps.

Melhor AdBlocker que já vi

it works well. Am using 2 browsers...Chrome & Firefox and i have both adguard installed because it works totally well. Highly RECOMMENDED

work perfectly fine until 14/11/2019 when Mozilla suddenly release new policies . R.I.P AdBlocker. Thank you fr your service this whole time.