Previous scene doesn't disappear after I load another scene

I created 2 scenes while “scripting: persistence” tutorial. I also created 2 buttons in both scenes to switch back and forth. Unfortunately, when I switch from “InitialScene” to “SecondaryScene”, labels in the “InitialScene” doesn’t disappear. However, when I switch from “SecondaryScene” to “InitialScene”, it works perfectly fine.

ScreenShot:(from “InitialScene” to “SecondaryScene”)


I actually fix it myself. Because I made the gameObject created in the first scene non-destroyable, so it stays through the scenes.