There is a compatibility problem with the "Programmer Art" texture pack. For example, the blocs "Crimson Nylium" and "Warped Nylium" have the new netherrack texture (1.14 +), even if I use the "programmer art" texture pack. There is the same problem with "Warped Planks" and "Crimson planks". (screenshot_001)

     I found another texture pack that solves the problem (https://www.planetminecraft.com/texture_pack/developer-art-1-14-and-1-13/), but we have to install it manually. (screenshot_002)