lighting error

Let the sky lingt irradiation on a light source,then set blocks around the lingt,it still has the sky lingt.
All opaque light source blocks have the same problem(in 1.png).
I' not good at English so I recorded a video to reproduce the bug
video mirror link: https://mega.nz/#!AUFUlBbJ!5NFqJD05RPkUs09hFTT2L3YigaOhKHIFJKy123onPMw