OHC

Confirmed in 19w09a.

Invisible players have been reported here: https://bugs.mojang.com/browse/MC-142521

Confirmed, for two players in a multiplayer server, same snapshot.

This is still an issue. Affected version 1.12.2/vanilla, Windows 10, bundled java 1.8.0_25 64 Bit and new ly installed 1.8.0_151 64 Bit

How to reproduce on a cat, in survival mode:

1. Spawn an ocelot

2. Tame it

3. Let it sit on a chest

4. push it off the chest

5. It will no longer sit when clicked, will not follow the owner, etc.