I noticed you have all the tickets for this bug marked as resolved. But it is not fixed, it is happening right now!
Spiders are spawning on a 1-block space, specifically in my Creeper farm.
I was recording this on video and I will provide screenshots.
My Creeper farm uses platforms with this pattern: block->block with button on it->block->block with button on it, and hole in between, repeating! With trapdoors overhead. So the only spaces for a mob to spawn are 1-block!
See the images I have attached!
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Thank you for your report!
We're tracking this issue in MCPE-175119, so this ticket is being resolved and linked as a duplicate.
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it still happen in 2024 in minecraft 1.21.1 was striped mining in 1X1 spot, and get attack by a spider that have spawn in 1X1 hole....... it happen 5th time in 10 minute