Minecraft 1.9.3 Pre-Release 1, Minecraft 1.10.2, Minecraft 16w43a, Minecraft 1.12.1, Minecraft 1.12.2
When you press the place/interact key with a slab item on a bottom slab, it tries to place it, even when that action collides with an entity. Meaning: It plays the animation and off-hand items can't be used.
How to reproduce
- Slab on floor
- Slab in main hand
- Bow/food/whatever in off-hand
- Stand on slab
- Look down
- Press action key (standard: right click)
→ Bow/food doesn't get triggered, but slab, although it can't be placed.
Code analysis by marcono1234 can be found in this comment.
- is duplicated by
MC-80858 Trying to place a half slab on top of another half slab while the top half of the block is occupied by an entity will play the block placing animation regardless