Throughout my base, I have noticed dark spots appearing even though there is a torch one block away from the dark spot. They do not stay for a long time, and they do not form consistently. I have noticed them most often when I return from the nether. Not a pressing issue, but a bug nonetheless.
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Thank you for your report!
We're actually already tracking this issue at MCPE-69037, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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