Same issue for me, copy of the daily deals page with pack bought, without progress in the Golden pack ladder !

Thank you Wizards to take in consideration this issue for all players !

I experienced the same, here's the pack I opened

I have the same issue, and customer support gives me a link to a patch note that shows this change and suggested giving feedback here. This is not acceptable as the link in-game go to the documentation that says that only cards from standard sets will be given by Golden packs.

https://magic.wizards.com/en/mtgarena/drop-rates?utm_medium=product&utm_source=arena#golden-packs

As expected nobody from customer support answered here almost 2 months after the original post, and even updated the official in-game link content.

+1

+1 I am not interested in alchemy right now,
beside mastery pass that is giving me mostly lotr cards, now I faced 2 lotr cards in golden pack which is described on your page as
"A Golden Pack contains six cards, all of which are rare or mythic rare from a Standard-legal set and have duplicate protection."

https://magic.wizards.com/en/news/mtg-arena/introducing-mtg-arena-golden-packs