Put the summary of the bug you're having here

What I expected to happen was...:
The librarian should lose profession after destroying the letern.

What actually happened was...:
The librarian used 2 lecterns, one for another librarian and another in his house. I destroyed both of the lecterns but the librarian didn't lose his profession. Even that another librarian didn't lose his profession

Steps to Reproduce:
1. Put 2 lecterns
2. Make the librarian use both of them
3. Destroy the lecterns

4. Their profession won't be lost