Boats, when falling, can push you through slime blocks.

Could you give a set up/way to do this bug for replication.

Well, since boats on slime auto-jump, I rode in it and got out. The boat fell on me and pushed me through the slime. I don't know if it works for soulsand or glass yet, I'll try when my tablet is charged.

Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.

Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki