Most shaders are corrupted when the user starts and switches to background several time on devices at loading time before the game logo even appears.

Everything works fine when the user starts the game normally, but most regular shaders (font shaders still OK though) will only display as pink if he switches back and forth from game to background while opening the game the first time BEFORE the game logo appears (at that point, the screen is still black). I guess this breaks the initial shader runtime compilation.

I guess there isn't much that can be done against that, so I would just like to know if there is a way to know when the shaders are corrupted. Logging tells me that the materials and shaders are in place.

Again, this is not a shader implementation issue: even the internal Unlit/Transparent unity shader is broken in the process.

Any suggestion is welcome. Thanks in advance guys.