There seems to be some sort of world generation bug. There's a floating 3x2 jungle tree over a small pond. No such tree when loading the seed in 1.12.2. Additionally, IDK if it's only due to the new way things are done, but the spawn location is different. Nothing major, but quite interesting.
Seed: -2043652089
Environment
Windows 10, latest update. Java edition automatic java version. default java args.
Confirmed. It's located at 162 92 207.