I have a light glitch in the middle of a shop in my survival/adventure map.
Here it is. The large square of blue-looking wool in the center should be white:
The glitch is only visible at night, and the only way I know to fix it is to update the chunk with a light source. The problem is that the player will be in adventure mode inside the shop, so they won't be able to relight the chunk.
I've also tried to relight the chunk using MCEdit, but unfortunately that didn't work.
How do I work around this?