Known issue with Edge/Anniversary edition.. Fixed in next version of plugin

https://adblockplus.org/forum/viewtopic.php?f=16&t=47790

Thanks. 

Seeing AU was extensively tested and extensions is one of the big new Edge features, this is the kind of bug that shouldn't be expected after release. Yes, I know it's a third party extension, but one would imagine Microsoft would work closely with the first extensions out of the gate - LastPass and Adblock - to prevent this kind of stuff happening.