Water goes through every waterlogged block (with the exception of slabs and stairs) when it shouldn't. For example, a closed trapdoor/door should block the water, but it passes right through it without any problem. Same with daylight sensors and other things that should block the water.
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Duplicate of MCPE-33389
Same is happening to me on Xbox One. Not sure if issue was present before any updates as I just tried using them recently.