It appears I was in error - its not Rematch thats causing the issue, rather its interaction with PetTracker - which defo seems to have problems, seeing as there isnt a 11.0.2 version yet

After installing the pre-patch, if I run WoW with Rematch enabled, my entire Pet Journal is greyed out and cant be shown.

PetJournal Enhanced works fine, and yes Ive updated to the 11.0.0 version.

I realise its probably just patch day hiccups, but thought I would mention it