Found what was creating the issue, its not the 1.13 update. Its actually the combination of an addon and the update. When i toke off the addon everything was working again.
It just crashed after a couple of minutes of play, it started after the 1.13 update.
I saved my world to make a copy and start the next project. When I opened the world again all entities within radius disappeared, all villager, pets and armor stands completely gone. I checked a big area to see how much I had lost and everything outside of radius was still in place.
I play on a pc, don't know if its the same issue as an Xbox.