Very buggy. A lot of websites break. There were too many already, but now lets facebook trip too. That does it.

Of course, you can disable uBlock for sites it breaks, but what's the point of having it if you can't enable it?

убил весь день,выясняя почему "вдруг" на сайте facebook лента новостей просто сама по себе рефрешится, без остановки! иногда останавливается, но стоит только сделать скролл страницы как лента новостей опять начинает хаотично обновляться и постоянно выкидывать тебя на начало ленты. Нашел проблему - выключил в firefox дополнение uBlock и лента сразу замерла и все проблемы пропали.

Mi sono sempre trovato ottimamente, ma da qualche tempo a questa parte, se attivo, firefox va continuamente in crash ed è impossibile da usare, spero sistemerete e darò volentieri un voto più alto oltre a riattivare l'estensione

Difficult to identify rules causing a block other than opening the logger and reloading the page, and then not possible to adjust enforcement of that rule on a per-page basis (or at all). Adblock Plus offers much better control of this sort of thing.

Ublock Origins not working properly on face book since the last 2 Firefox updates.
Keep getting "Sponsored posts" on the right side of the page.. If I move the news feed column down, The "sponsored post" pops back up. Just had it happen again. Randy, how do we reply here? I have latest Firefox, 57.0.1

This add-on uses about 1/2 GB of Memory in Firefox. It claims to be easy on CPU and Memory? I need to look for lighter ad blockers!

found better

Ublock Origin is a very good adblocker but latest version seems to slow down the browser versus not having it on at all which in the past was not the case.

Hard to figure out and use after using ABP for several years. Can't get element blocking to work, can't intuitively add my own filters, can't track number of filter hits. New non XUL tools seem to be much more limited in control.

The latest update has rendered this add-on useless. Many websites fail to display properly, instead a shell is displayed, but the moment Ublock Origin is disabled it works fine. The interface is terrible so removing or adding elements is confusing.

I have returned to ABP.

Blockiert leider alles, muss ihn dauernd auf inaktiv setzen, um meine üblichen Online Shops öffnen zu können. Daher wechsle ich wieder auf einen anderen Ad Blocker

Теорехтически это может и лошадь, а прахтически она падает.
Рекламу худо-бедно блокирует, но пользовательские фильтры если и запоминает, то с пятого раза, причём составлять их нужно полностью вручную. О блокировке жучков на сайтах нет и речи. После трёхдневных попыток привести это чудо во вменяемое состояние, отправил его в канализацию. Админь!

Bonjour,
Il est toujours impossible de participer au forum de Microsoft Community (modifier un message, poster une réponse) depuis Firefox 56 si uBlock (en version 1.14.16) est activé au démarrage de Firefox.
https://answers.microsoft.com/fr-fr
Rien de tel sous Chrome (ublock en version 1.14.12 qui marchait aussi sous FF).
Ce n'est toujours pas corrigé.

When ublock is enabled half of the pictures on facebook's timeline won't load.This started happening this week

Не стабильный! Рекламу Яндекс. директ то блокирует, то нет, не смотря на постоянное обновление фильтров.

Ebay no longer works—clicked links get placed in the address bar but until you highlight the address bar and press enter, it doesn't work. Also paste and go on Wordpress sites is fubared.