lately I've been testing my apps on iOS 7 and I'm having a serious issue in one of them.
Basically, my apps has a lot of graphic parts with animations, particles and so on, however everything works perfectly from iPhone 3G to iPhone 5 (on ios pre 7).
On iOS7 the apps works correctly, however, as soon as I go to a section of the app that shows a mapView, and then switch to another section (closing the mapView), some of the graphic elements get messed up. Specifically some images are turned in white rectangles.
Any idea why is that happening? It looks like texture memory problem, however it's pretty weird that on pre-iOS7 devices the app works correctly (even on older devices like iPhone3G/iPhone3GS).
Also if I close the mapView before it loads its map tiles the graphics are not messed up (mapview consuming all the texture memory?)
The logs in xCode show no error messages or warning related to memory problems or such.