The bug
It was possible to launch arrows into the air using a slime block and piston. When the piston was activated it would push the slime block up and any arrows on top of the slime block will get launched in the air. In 1.11 this no longer happens.
How to reproduce
Put down piston that can be activated via lever, button, etc.
Place slime block on top of the piston
Take bow and shoot arrows into the top of the slime block
Activate piston
→ Most arrows stay on the slime block and do not launch up like in previous versions
Linked issues
Attachments
Comments 6
It is interesting that it was never an intended feature when it is used to build a catapult in the recently published book
"MINECRAFT MEDIEVAL FORTRESS" by MOJANG.
Can confirm for MC 1.12.1.
I also noticed that some of the arrows are glitching in the air when reproducing this bug.
Don't see a bug here. Launching arrows was never an intended feature.