For context, the way I play is to dig down to bedrock, then up 7 blocks, mining in rows two blocks apart so I can maximize how many blocks I see while mining. A grid. I'm sure there's a term for this.
Anyway, ever since the latest caves and cliffs update a bunch of lava seems to be moving through stone, and the visual top layer is missing. You can see through it. It's wild.
Thank you for your report!
We're tracking this issue in MCPE-126658, so this ticket is being resolved and linked as a duplicate.
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