Affects Version/s: Minecraft 1.11.2, Minecraft 17w13a, Minecraft 17w13b, Minecraft 17w15a, Minecraft 17w16b, Minecraft 17w17b, Minecraft 17w18b, Minecraft 1.12 Pre-Release 2, Minecraft 1.12.1
Fix Version/s: Minecraft 17w47a
Placing a tripwire hook updates blocks around an opposite facing tripwire hook on the same axis even when they are not connected.
See also Hermitcraft 4 Ep. 96- Wireless Redstone Door! (sorry cub).
- Build a setup as shown in the attached screenshot Tripwire hook setup (17w13a).png
- Place a tripwire hook on the gold block so that it faces the other tripwire hook
→ You will see that the trapdoor is updated and switches to the closed state