If you make an area with lava and flowing lava, then remove all the lava with /fill, there is some light that stays around a certain area.
How to reproduce:
Place lava in an area with holes between the lava sources
Let the lava flow in these holes
Remove all of the lava with this command : "/fill ~-10 ~-10 ~-10 ~10 ~10 ~10 air replace lava"
Remove the fire that could have been created
Watch the light at the edge of the area
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We're tracking this issue in MC-172980, so this ticket is being resolved and linked as a duplicate.
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