Update 1/16 - Adblock has informed BleepingComputer that its engineers fixed the problem and released ABP 3.22.1 and AB 5.17.1 on the Opera and Edge extension stores. The same versions are currently in review on the Mozilla and Chrome add-on stores, and should be made available soon.
Considering the breaches lastpass had in just the last year, using their cloud service is absolutely a concerning choice. how they got breached is especially egregious.