Many of my custom rules disappeared/was removed after an update. Thankfully, I always keep a backup, but other than that, the addon does the job very well.
Edit 24.04.19 : Thanks Jessy, for your answer. I must have accidently rated the addon lower than intended, and that's now corrected.
Thanks for the feedback! We're aware that an update from Firefox to 66 recently had the effect of wiping data from multiple extensions. We apologize for any inconvenience that was caused due to this.
Glad to hear you had a backup though! Jessy ABP Support Team
