We are aware of the issue with the Block Element dialog and are investigating it. You should expect it to be addressed with a follow-up release soon. You can still add any filter list you want, nothing changed here (you can use the links on https://adblockplus.org/subscriptions for example). As to missing translations, everybody is free to help out with those on https://crowdin.com/project/adblockpluschrome and https://crowdin.com/project/adblockplusui (strangely, French is supposed to be 100% translated).