If you place a liquid in a bucket on a source block, that liquids particles will come out of the block and a sound like blocks breaking will be heard.
(There is a duplicate of this so sorry about this mojang)
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Duplicate Bug... Use the search feature before posting.
All though this is a supposed fixed item (per the release notes), if its still occuring then it is a continued bug from the snap shot
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66th Duplicate of MC-18365, please use the search function to see if your bug has already been submitted. Currently over 58% of tickets are being closed as duplicate.