A sibling comment mentions Neon Genesis Evangelion, which was “made” in the 90s but still had the original end credits song “Fly Me to the Moon” on the ADV Films DVDs (2008), losing it in the Netflix release (2019) and the GKIDS Blu‐Ray (2021).

Presumably the 2019 and 2021 releases both decided that it wasn't worth the cost to relicense the song, a decision they likely would not have needed to make if the show was made after streaming was the norm.

Yes, absolutely, although I currently lack good examples thanks to "tip of my brain".

The reason I'm certain is I spend an hour or so most days cleaning up and resyncing subtitles .. and there are often discrepancies between subtitles for first release Vs later streaming Vs DVD Vs BluRay releases still to this day.

This happened for a recent (within last two years) TV series that had a sound track that went from great (first release in country of origin) to "blah" on second international streaming release.

Probably UK? - It'll come to me (dammit).

Point being, yes, this stuff still happens.

Even older TV series differ between 10+ year old DVD box sets and this years streaming release - entire episodes get dropped, others get recut with scences dropped.