This issue didn't seem to start once 1.14.30 released but instead started happening recently where creepers, zombies, spiders and skeletons seem to be spawning at max light level or light level 13-15 but only near my villager hall.
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Thank you for your report!
We're actually already tracking this issue at MCPE-49616, so I resolved and linked 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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