In my game some of my sprites don’t appear on screen. And saw this. I tried making a chuck-like loader when on-screen example: On-screen: Show sprites Off-screen: Hide sprites. and I still don’t see some of my sprites in-game 
Please, to ensure people understand the issue you gotta give more explanations and details.
(In addition, there are a million possible reasons why a sprite would not show up on screen, this is why more information is needed)
Maybe this would help: About the How do I...? category - #4 by arthuro555