Hi! I just downloaded Britney Spears’ album in lossless format, but there’s a cutoff at 21kHz on the spectrogram (the entire album is like this). Then, I changed the source and downloaded it from Qobuz, but it still has that cutoff. Her other albums can easily reach 22kHz. Is there a reason behind this, or is it just a mastering error?

Here’s the screenshots: https://i.ibb.co/YQD3jtp/Hh31-211503928.jpg