QImage::Format_RGBA8888 does not compare correctly with itself

If one creates an image out of framebuffer written in RGBA8888 (physically red is the first byte, then green, etc.) format, saves it to a .png, loads it to another QImage and compares, they are different.

This behaviour is different from ARGB32, where a framebuffer written in ARGB32 (physically alpha is the first byte, then red, etc...) is saved to a .png, then loaded to another QImage and compared, the comparison succeeds.

Example code attached.