F3 debug screen regression in 1.21.9+: layout change and reduced chunk-relative usability

In Minecraft Java 1.21.9+, the F3 debug screen was redesigned and its behavior changed.
This introduced a regression for technical gameplay and advanced navigation workflows that previously relied on the debug screen.

Key issues observed:

• Player coordinates (XYZ) were moved from the left side of the screen to the right, reducing readability and breaking long-established workflows.

• Chunk-relative coordinates (in x z) no longer update per block and appear restricted or coarsened, even in private servers.

• The entity debug feature always shows entities on your screen as 0 (e.g., E: 0/number of entities rendered).

• The pie charts are also affected, making pre-1.21.9 tutorials confusing (e.g., the game-render feature is less usable).

• There is no gamerule, toggle, or accessibility option to restore the classic F3 layout or behavior.

• These changes negatively affect technical players, speedrunners, and redstone users, breaking compatibility with years of existing tutorials and workflows.

Other features that would be beneficial to bring back:

• Easy switching of render distance using F3 + F

• The old F3 layout with coordinates on the left, like in pre-1.21.9 versions