Textures swap with other random textures. This doesn't happen every time, but about 2 out of 10 times starting a world. I'm on Ipad Pro. This started happening after I applied the Deep Sea Mash up texture pack and disabled it. It seems to me like a "Game file" issue.
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Thank you for your report!
We're tracking this issue in MCPE-149662, so this ticket is being resolved and linked as a duplicate.
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