i spotted an unusual behaviour with the emission shaders that i haven’t noticed before. I was trying to make an IES light shader following a tutorial from Chocofur, when i noticed a strange emission source phenomenon that could make a lot of problems in archviz. The emission shaders are virtually shutting each other down. Did someone ran into this before and should we report a bug? I found this problem on linux 2.71 / 2.75a / 2.77a versions. I would like to know if you can reproduce this issue on your computers, just to be sure i am not doing something wrong. The screencast videos can be downloaded from the link below. Sorry about the popup, just ignore it.