The bug
Using Ctrl + Pick Block on a powered Crafter and placing the new Crafter down makes the redstone arrow on its UI stay powered.
To reproduce
Place a Crafter and a Button next to it
Press the button
While the Crafter is still powered, press
Ctrl
+Pick Block
Place the new Crafter somewhere else and open its UI
→ ❌ The arrow still remains visually powered despite the block being unpowered
Can confirm