Upon entering two seeds for gameplay I noticed constant errors in world generation including:

Structures not well positioned (with disconnected, for example);

Floating blocks and chunks of earth;

Places where water is lava could enter normally, but physics is not well applied;

Double chests can appear in structures and Even lack of optimization.

Errors in world generation always happened, but after 1.17 or 1.18 it is happening more frequently even with the changes and some corrections in versions 1.19 and 1.20.

Suggestion/Basis of thought: You could review the game code, making it better optimized and applying changes to make the world generation better defined.