Like numerous other frustrated ABP users have vented out their disappointment here, the new version does NOT seem to be an improvement from the earlier version. I for one, would like to see at the least the following 2 options to be back from the earlier version(s):
1) Display Blockable Items -- When we click the ABP icon when inside of any page, it used to display links in that page that could be potentially blocked)
2) Custom Filters -- As of now, the only option to add custom filters seems to be to "block element" on a page, which does not seem to work 90% of the time. Bring back the old way wherein we can add custom filters by accessing links displayed in the "Display Blockable Items on Page" view. You have to keep in mind not all users are coders and are not that computer savvy as you might expect them to be. Meaning, adding custom filters is pretty difficult for an end user like me without ABP helping me by displaying a portion or all parts of the link (of the element) I would like to block in a page. Like I mentioned earlier, as of now, 90% of the time, new the "block element" feature opens up only an EMPTY BOX that says ADD FILTERS, without any link captured inside of it. It only has the ADD and CLOSE buttons, and the box totally empty without any link.

The previous version (v2) is 5 star, but v3 is missing key features!
I hope the features from v2 are going to make it into v3 at some point.
Also, not a fan of the new UI in v3!

I wish Mozilla hadn't decided to kill off 'legacy' add-ons before WebExtensions had become a good enough replacement!

H-O-R-R-I-B-L-E!!

This UI sucks so hard - incredibly horrible!
Why you not only updated the plugin engine referring to the latest Mozilla guidelines?
And partially the blocked/hidden sections came back since v3.0 ....

As of the November 6, 2017 update, websites do not display properly in FF 56.0.2 (Windows 7). If I disable ABP and refresh the page, everything is fine, but if I re-enable ABP, all the browser tabs immediately go blank. I can view the source, so the pages were obviously downloaded properly, but they just aren't being rendered at all.

Everything was fine the morning of November 6; the problem started sometime in the afternoon.

Please fix ASAP.

C'est quoi cette arnaque ? On ne peut plus gérer les abonnements ou mettre un site en liste blanche, les options sont buguées à fond...

Seriously ? I mean SERIOUSLY ??

*The new UI is a joke and the options are TOO less in this 3.0 version !
*Worse thing is the Custom filters were you can't Enable or Disable filters anymore, they are all togheter now enabled...
*And the NEW Element hiding feature in web pages is stupid AF !!

Back to 2.9.1 ver' ...

The version 3.0 is junk, there is less features than before.
Ex: You delete "Open the list of filtered items".

La version 3.0 est pourri, elle a moins de fonctionnalités qu'avant.
Ex: Vous avez supprimé "ouvrir la liste des éléments filtrables".