Tree Leaves with the HDRP/Open World Nature/Tree Leaves shader do not render correctly when using HDRP 7.2.0 or higher.
Downgrade HDRP to 7.1.8
The way shaders work changed in HDRP between version 7.1.8 and 7.2.0 causing the Tree Leaves shader to break. We are looking into the changes and working on a fix. Until then, the best solution is to downgrade your project to HDRP version 7.1.8.
Another workaround is to change all the materials that use the Tree Leaves shader to the default HDRP/Lit shader. Note that this requires you to reassign the textures and will disable wind effects.