If I don't Pack my episode, the star coin system works well. Once I packed it. The star coin cannot refresh.
For example, when I collected all the star coins in 1-1, and then in 1-2 and other levels all star coins will be "blue" which means collected.
That's causes the player only need collect one level's star coins and all the levels' star coins are collected.
The star coin refers to NPC-330.
The video is here.
