Why are sprites messed up on mobile launch?

Hi,

When I launch my game on mobile (ios), some of the sprites are messed up. As you see on the picture, the yellow objects work fine, but the background image and the blue and green objects are messed a bit.
I compared the imported texture files, and the sprite assets of the objects that are fine with the messed up objects’, but I couldn’t find any difference.

How can I solve this?
Thanks!