I'm using 3.3 rc0, and alpha blending on Win32 and Android looks fine, but on iOS it looks wrong.
An image that is supposed to fade in/out has weird "jumpy" behavior when it starts fading in. When it's close to being almost fully transparent, it kinda flickers.
I've seen the same bevahior before on Android and Windows when using GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA.
Are you guys seeing the problem on all targets, or also on a specific one (like iOS for me)?