Can confirm on 1.14.4 vanilla. Didn't happen on 1.14.3
Not resolved in 1.14 release as far as I can tell. The wandering trader disappears, but the llamas stay.
I've been running a 1.14 server for about a week and my world is littered with them. I've already started killing every such llama I see. I hope it gets resolved because there are spots in caves where players don't go often. This puts a bit of unnecessary maintenance work for survival server owners.
The same happens on Java and if it's intentional, it's not a very good feature to have, especially on servers.
I've been running a Java server with 1.14 for about a week, and my world is littered with them. I've already started killing every such llama I see. I hope it gets resolved because there are spots in caves where players don't go often. This puts a bit of unnecessary maintenance work for survival server owners.
A small update, I have a new computer now and it seems that on a fresh install of Linux with KDE/Kwin this issue doesn't happen. It's possible that because I switched from an Nvidia graphics card to an AMD one, the change in drivers and X-server settings affected if this problem happens or not.
Can confirm, the issue is back in 1.14.4, tested with no mods / full vanilla.