I have found out that music library often tend to, well, don't treat their property very well considered the fact that is their bread and butter.
The demo file of a SONOTON album from Christian Kägi (If I remember correctly) is fine, but the actual WAV was damaged, it was literally beeping loudly in your ears with artifacts and digital noise.
They didn't even bother to test it. Then, as you may know, FOCUS MUSIC has their demo files intact on NICHION, but the Universal WAVs had those clicks and "chirping" from the error correction going on, over several albums that are ripped either in "fast mode" (making the disk spin fast depending on the drive's capability, but also adding a very high risk of said errors) or the disk itself is just busted. In either case, it's super bad what they do with their stuff.
The CD might reach the 22(.050) kHz because of its 44.1 kHz nature (Nyquist–Shannon theorem) whilst the WAV might be from a different master.
I also would be surprised if there is any actual music signal in those frequencies (which, funny enough, can't be heard by us humans, it's literally ultrasonic) or if it's just digital shenanigans like many lossy encoders that shove "garbage" there.