I've had Endermen attack me suddenly. I never even seen them on the screen let along looked at them. He just got very uppity and decided he didn't like me.
I'm seeing the same thing happen on the PC Version which used to be the Windows 10 version.
My friends and I share a realm and we found a village that we promptly lit up and walled off. However we still have mobs spawning in the village where the light level is in fact well above 8. Creepers have literally spawned right next to me as I'm standing RIGHT NEXT to a torch. All the hostile mobs are doing this and it is just on normal ground/dirt blocks.
With that, it is not a duplicate of the previously mentioned ticket. Even if it were to be a duplicate the one cited is marked as resolved, which clearly it is not.
@Auldrick, The Creeper spawning was in fact during night. I haven't noticed mobs spawning near light sources during day, so this seems to be working just fine. It's only at night time they are still spawning close to light sources.