Upscaled textures for jkgfx don't work on Android

Adding an upscaled texture pack to the jkgm folder inside the jk1 or mots directories causes all textures to load completely black, except for light emissive materials. I tested the same files on Windows and macOS, and everything works correctly there. Does the Android version support this feature? Specs: Retroid Pocket 6 Android 13 Snapdragon 8 gen 2