Allowing Wizards to scribe Cleric spells is a rules change.
This one is a bug, really. Scrolls currently are unrestricted in both scribing and use, it will be changed.
I think it's important to recognize that quite a lot of what we have now is an unfinished, bugged or placeholder.
I think many of the changes Larian did are good, they clearly want players to have more action paths when their turn finally comes and I'm behind it. I think they should reconsider things like "Hide" maybe there, because that one is super abusive now.