Hold on, there is one more thing.
The game stores how many morale/luck descriptions have been "registered" and leaves those "unregistered" as "temporary" like in the pic. It compares the morale/luck values in creature stack info and the morale/luck description value. If there is a difference, the temporary value would be shown.
Now I can register a few more with the tricks here. How do I register so that the temporary description can be hidden?