TLDR: No Scratches emotes or NPC Ela’Lothen when doing everything right.
(Scanned Feralas and Hinterlands before Pre-patch)
I guess it is bugged because i scanned Hinterlands, Feralas and Duskwoods moonstone and still could not see Ela’Lothen at emerald dreamway. At same time, the “Scratch” emote have not been showing at all and i just randomly went to duskwoods and got the moonstone (21-10-2020).
Today (22-10-2020) i went to check again if the NPC is there, and it is not.
I have been using macro that showed me which stone have been scanned, and after prepatch it is not working at all.