Xperia z5 premium.
Title says it all: enter a door, closed or open, blue bubbles will show up and slowly become less and less as long as you are in that door block. Exactly like under water. I have not tested if I actually take damage in the end.
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Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-17073.
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Duplicates MCPE-17073