Weird Issue with BBox baxkground

I have been meaning to ask this question since i noticed it.

When you preview your BBox game, without playing the game, note what happens to the background image - It starts moving on its own even when the BG isn't meant to move

Before:



After:

 

Yea i noticed once as well.
I then just placed background as an object, set it to decoration, but its a pain having to line it up in every level.
Especially would be with your background.

 

Ah I found the root cause and fix

Need to unlock the background and set speed to zero