While tinkering with 19w02a, I decided to look around a woodland mansion. The game crashed when I entered a room. When I reloaded it, I found it to have a permanent lighting glitch. Although the room is fully enclosed, there is this one chunk that has zero for block light but 15 (or whatever the time of day is) sky light.
I tried placing and breaking a torch, and I tried breaking and re-placing a ceiling block. Neither made the glitch go away.
Despite being a brand new world, a zip of the world directory is 18 megs, too large to upload here. That could be indicative of other problems. The mansion itself took more than 5 minutes to generate. For the crash, I filed a separate bug report, which is MC-142053.
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The world download is here: https://drive.google.com/open?id=1FqWFm6d_nt7lAOp-q97VfU68BEWyEpZt
The coordinates in the room are: -13650 / 65 / -3034
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I have the same problem with NOT just in woodland mansion but in general on all places, torch lights seem to expire in snapshot 19w07a and is generally a complaint of my friends playing the same version. I attached pics that compares the glitch and the tempy fix that I do is to re-torch and or replace the block which is very annoying and time-consuming.
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