I made a 6x1 water tunnel with stone surrounding it keeping the water from flowing out, and axolotls and glow squids are spawning way too much naturally in it. The water tunnel has soul sand at the bottom of it, it was going to be an elevator.
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Thank you for your report!
We're tracking this issue in MC-221571 and MC-222036, so this ticket is being resolved and linked as a duplicate.
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