I was trying to make a cobblestone tube with lava and water but the water did not turn the lava to the expected cobblestone. I placed the lava on top of a slab and then when the lava was all the way to the bottom waterlogged the slab and to my surprise the lava stayed the same.
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We're tracking this issue in MCPE-41103, so this ticket is being resolved and linked as a duplicate.
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