KTX2 files fail validation

I'm trying to extract individual images from the sample environment KTX2 files, but they all fail validation checks:

KTX-Software-main/build/ktx info glTF-Sample-Environments-main/field/lambertian/diffuse.ktx2 
Validation failed

error-6001: Mismatching dfdTotalSize and dfdByteLength. dfdTotalSize must match dfdByteLength.
    dfdTotalSize is 28 but dfdByteLength is 0 and they must match.
error-6015: Invalid colorModel in basic DFD block for RGB VkFormat.
    DFD block #1 colorModel in basic DFD block is KHR_DF_MODEL_UNSPECIFIED but for VkFormat VK_FORMAT_R16G16B16A16_SFLOAT it must be KHR_DF_MODEL_RGBSDA.
error-6025: Invalid sample count in basic DFD block. The sample count must match the expected sample count of the VkFormat.
    DFD block #1 sample count in basic DFD block is 0 but for VkFormat VK_FORMAT_R16G16B16A16_SFLOAT it must be 4.
error-6021: Invalid bytesPlanes in basic DFD block. The values do not match the expected values.
    DFD block #1 bytesPlanes in basic DFD block are 0 0 0 0 0 0 0 0 but for VK_FORMAT_R16G16B16A16_SFLOAT textures these must be 8 0 0 0 0 0 0 0.

I assume this is because the ktx tool is much more recent than the ktx2 files. I tried checking out a much older version of the KTX-Software, but the older versions don't seem to have a tool for image extraction from ktx2. Any advice on how to make this work?

Start with the KTX-Software ktx info command and the sample file glTF-Sample-Environments-main/field/lambertian/diffuse.ktx2. Investigate why validation reports mismatched DFD fields, then determine a compatible way to extract individual images from the KTX2 files without validation failures.