Some copper blocks not oxidizing while others will

I placed multiple types of copper blocks within very close proximity of one another and only a small portion of the blocks oxidized. These blocks have been placed for well over 40 in game days. I also attempted to strip the unoxidized copper with an axe to see if that would update the block but it did not work. The oxidation does not seem to be confined to certain block types however. This took place on a 1.18.0 realm and we have both Xbox and PS4 players on this realm and this is experienced by all players.