The reason why this happens is because all the sides of the leaf block on Minecraft Java Edition are a one sided texture. Like ladders, you cant see behind ladders, they go invisible you can only view the front side. Or like glass, but a version were you can see glass through. Changing the leaf block to have one sided leaf textures to match Java will improve performance because it would require less 2D texture rendering and less mip-mapping and anti-aliasing the game has to process all at once. And it will makes leafs look much cleaner and complete than they are right now. The developers said to report missing feature parity's here, I want minecraft to improve! keep up the good work!

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