no longer instant oxygen regenerated

There is no oxygen in Minecraft.

As of 1.13 Update Aquatic, Oxygen bubbles don't instantly regenerate. If you want to play with instant oxygen regeneration, play an update made before 1.13

Thank you for your report!
We're tracking this issue as MC-128771, so this ticket is being resolved and linked as a duplicate.

That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.

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