It increases, but after exiting the backpack and then re-entering the bladder gauge is back to 1 or 2! But if you sit on the backpack screen then there's no issues if that makes sense?
Hmm, I still can't think of why such a game-breaking bug might happen right now, but if the backpack logic is the problem then it should probably be okay now. If the latest version is still giving you the bug, please let me know though!