Same kind of lighting glitches that affect versions 1.7 and under. I THOUGHT THESE WERE FIXED! These bugs only seem to take effect on blocks that emit light. Also, for me, this only happens at night time and when i've freshly loaded the world.
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duplicates
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Sonicwave
Seems
either like a duplicate of MC-911or a regression of MC-18526. (More like MC-18526 since it's not under an overhang).