A slime chunk was being dug to bedrock from the ground and the appearance of slime was being confirmed, I appear, and it stops, and if, unstable.
(スライムチャンクを地上から岩盤まで掘り、スライムの出現を確認していたのですが、出現したり止まったりと不安定です)
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Do you have a screenshot?

Thank you very much for your answer.
This is the one of which I took a picture from the ground.
A bridge of glass for observation has been made the center (Y=35).

Thank you for your report!
However, this issue is a Duplicate of MCPE-29401.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
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