Tripwire hook drops but doesn't break

The bug

Tripwire hooks facing north or east can be duplicated by placing them on a trapdoor.

How to Reproduce

1. Place a tripwire hook facing north or east on an open trapdoor and connect to another.
2. Use it, the tripwire hook facing south or west will break normally, but the tripwire hook facing north or east will drop, but won't break.