This particle bug when water is placed in an existing flowing or source water is experienced in both survival and creative mode. Also, when placing the water, there is a breaking sound that you can hear.
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Please do searches on this before you post a bug... this is a duplicate of about 50 bugs reported just in the past 3 days
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[Mod] Tails added a comment
Duplicate of MC-18365, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being closed as duplicate.