(assuming graphics are set to "fancy"), if a leaf block is in front of water and water is visible through said leaf block, while breaking the leaf block and looking through it at the same time, it will seem as if water isn't there. I hope I could explain myself, English is not my first language.
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violine1101
migrated
Thank you for your report!
We're actually already tracking this issue in MC-9553, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.