Lighting still exists from torch after its removal

I placed a row of torches as shown in the image in MCPE-368 and replicated the problem where light does not pass from chunk to chunk. Then I removed all the torches. The torch which didn't pass light from chunk to chunk continues to shed light, even after it's removal. I tested this twice, easy to replicate. Quit/load the game again, and you can still see the problem.