Chunk lighting, when switching from Night -> Day, random chunks appear to be locked at Zero light level

Hi there,

While exploring the latest snapshot, switched from Night to Day using the commands while in Creative mode.

It appears that random chunks of the world where stuck in light level 0. 

Unfortunately forgot to get a screenshot within the chunk, but the land outside was level 15, and the chunk next to it was level 0 for lighting.

Hope this helps

Seed: -1554645707576557489