I've found the exact thing but instead with Lava
Found out what is causing the bug
The water is actually trying to generate as it is a river biome but it generates over a ravine or a lake over a ravine or something like that (I don't know the first one still though but almost the same thing I'm sure) But yeah I finally found out
-320408393505991465
This is an example
Well actually it looks like a loading chunk
I have no mods I'm trying to figure out why I see random drops from like y75 to 62. There is a terrain bug
Weird maybe a typo on my side or a bug miss-generating the seed