Okay so this is a serious issue .I will provide screenshots for everything.
While I was messing around with ad galaxia I noticed that some chuncks in side of ocean biomes only were missing for some reason , I enabled chunk grid to discover that it is not a chunk but rather a small spot . Then I went into gamemode spectator and found out that I can see underground caves normally so I figured out it might be a problem with a block that is causing that , I opened worldmap screens and found out that it is an oil fountain structure or whatever it is called .

Oil fluid is somehow glitching and not rendering or letting other blocks or liquids that touchs it render . And when I tried to place it down myself to verify that it is Ad Astra's oil who is causing the problem , my game crashed . I relaunched my game and opened the same world to find out that the spot where I placed the oil became also glitched and became transparent it took only 5 seconds to crash again

Screenshots

-The normally generated glitch in oceans :

-The one I made near it on the beach ( it apprently spread to the ocean , u know like normal water physics )

-A look from xaero's world map ( the gray pixels are the oil )

Crash-reports

-1st crash when I tried to place the oil and see myself it it was causing the issue
crash-2022-09-04_01.00.15-client.txt
-2nd crash 5 secs after I reopened my world
crash-2022-09-04_01.10.14-client.txt

I think this bug is caused by my side so I will close this issue

This is a colormatic bug btw.