Faithful Cartographer Possible?

If I remember right, a while back a ton of locations used to be glitched making the achievement very tricky and temperamental. I’m thinking about giving it a go but don’t want to get all the way through and realise i’m gate kept by one rogue location that’s glitched.

Has anyone got any info on possible glitched locations so I can know ahead of time, and if it is glitched, are there any tips or work-arounds?