When you try to destroy a water source with a flowerpot, the source vanishes as the flowerpot destroys itself.
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I fail to see how this is a duplicate of MC-125351, given that flower pots do pop off when underwater.

This is actually a duplicate of MC-204842.

Unwaterloggable blocks that are placed inside the water always remove the water, even if they get destroyed by flowing water.
Same as MC-204842 (i.e., some blocks are not waterloggable)
Thank you for your report!
We're tracking this issue in MC-125351, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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