Yes. I found it. I cannot remember switching crossfade on, maybe another family member, but the effect with HQPlayer is to make most styles of music unlistenable. Maybe there is some other setting because It doesn’t really fade. It is just a very hard cross between tracks:
So I tried it with pop music where I can imagine having a use for it but it’s the same. With HQPlayer there is no real fading. It is just a hard cross. Has this come up elsewhere except in the post I found?
From a classical perspective the issue is more one of adding some intelligence to cross fade so that it knows with classical music different behavior is expected. I have just found out for example that with roon you can expect to have to re-baseline “zone settings” eveytime you, or a family member, switches between genres.