Buggy reloading of light sources when chunks are reloaded.

Already updated to latest bug fix update for MCW10.

I recently traveled a long distance to find a village, and used torches to mark my path, as I progressed the chunks would obviously unload, however when I followed my torch path back to my base, I found that there were some bugs with how the torches reproduced light afterwards. Destroying and replacing the torch seemed to fix that specific torch's issue. See attached screenshot of the bug.