Texture of various blocks are not loaded properly with both Nvidia RTX PBR texture pack and RTX on.

Texture of various blocks are not loaded properly when both Nvidia RTX PBR texture pack is active and ray tracing is active (I am using the latest Nvidia geforce game ready driver).
The texture pack that I am using is in the attachments below and the download link is : https://images.nvidia.com/content/minecraft-with-rtx-beta-resource-packs/nvidia-pbr-example-texturesets-pixelart-feb-2-2021-final.mcpack