If you are in a 1 block space you can't jump, but if you are on a block without a collision box you can.
Steps to Reproduce:
Build a 1-block high tunnel
Use water to start swimming and enter the tunnel
Try and jump
Place a collisionless block (item frame, button, lever, etc.) below you
Try and jump
Observed Results:
With a collisionless block below you can jump, but with a collisionless box not below you, you can't jump.
Expected Results:
You shouldn't jump both ways (with or without a collisionless block below you)
Linked issues
Attachments
Comments 4
Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.
Quick Links:
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Thank you for your report!
However, this issue has been temporarily resolved as Awaiting Response
Is this still an issue in the latest version?
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Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki