Rendering Sprites Issue (Disappear)

Hello,

I’m trying to create a 2D game. And i’m on the level creation. I’m doing some test to understand the direction i will take to make my level. But during that test process i have an issue on the sprite. they dissapear for no reason.

You see they are on different position but in game i have result like that

But when i move, the bug is corrected…

I don’t understand why it’s act like that during the game. Can someone will be able to help to understand why it’s like that?

Thanks for your help!