When i use many redstone lamps at once, and they turn off, the area is still illuminated. It's mostly seen when i build with Nether Quartz and glass. I havent seen the bug on other blocks.

TL;DR:
Redstone lamps light does not disappear when turning the light off.

Steps to Reproduce:
1. Build something huge with nether quartz and windows, like a skyscraper
2. Use redstone lamps as light source
3. Turn them off