Texture uploading is broken on various iOS device generations

1. What happened

I create a Texture2D on the fly, do some color maths and call SetPixels()/Apply() on it. Then I blit it to screen. On desktop and iPhone 5 it works fine. On iPhone 6 and iPad Mini 4 the colors are way off and don't look anywhere close to what they're supposed to look like.

A few things I tried :
- Using different texture formats (RGB24, RGBA32, ARGB32).
- Changing the graphics API (GLES2, GLES3, Metal, same result on all of them).
- Reading back the uploaded texture, the colors are correct when the texture is on the CPU.
- Doing a "capture GL frame" on Xcode, the uploaded texture in VRam is wrong.

2. How we can reproduce it using the example you attached

Open the project, open the "Demo" scene. Build and run on an iPhone 6 or iPad Mini 4 (you'll probably get the same result on any recent iOS devices). The colors won't look like what's in the editor. Build & run on an iPhone 5 : it works fine.

License type: Pro
Version: 5.4.0b4