Mysterious sword power changing bug:

I've had two complaints, both of them being on quests I made, of the sword power mysteriously changing for no reason.

Complaint 1: 5th quest, wooden sword had the power of white sword.(and then changed to normal after awhile)

Complaint 2: Triforce Knight, magic sword not as powerful as it should be.

In both quests, the quests should be set up for the swords to function properly. Its a weird bug that seems to pop up out of nowhere.