This can only be applied to ue5.4.2 …. If it still isn’t working properly you can delete the shaders folder and validate the install from launcher to return the default shaders. I’m currently using without issues. Are you on windows and are you validating that the shaders are extracted into the proper directory? "yourinstall directory/Epic Games/UE_5.4/Engine/Shaders should actually contain the extracted files so be sure its not Shaders/Shaders/Files by mistake.
The shader changes are actually part of the upcoming ue5.4.3 and I’ve only manually zipped the changes from this PR. To help others quickly patch without manually changing each or needing git
I’m sorry you having issues but they are working for me. I’ll clear my shader directory download from my upload and see if I can repo your outcome. (did this step this morning to validate)