Yeah that pretty much describes the issue, sorry I didn't see that report.
It's on Xbox, and I tried my wifi and router. Thanks for the suggestion though.
Both my brother and I had a similar issue: our custom skins weren't saving and wouldn't load into worlds or servers if they did save.
Did the other one's have leads? Llamas follow each other so if you've killed other Traders before and had the llamas freed, they might have went and followed the ones on the leads. Hope this helps!
https://www.google.com/search?q=why+do+llamas+follow+each+other+in+minecraft&rlz=1CANEHU_enUS917US917&oq=do+llamas+follow+each+&aqs=chrome.1.69i57j0l2.10027j0j1&sourceid=chrome&ie=UTF8&safe=active&ssui=on
I'm having the same issue with the sound thing- I don't know about the generation though.
Maybe add the seed and coordinate?