Lava cauldron under the pointed dripstone will immediately get full when water dries up above it
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Comments 5

Can confirm, affects 1.21.31.
Steps to reproduce:
Build a contraption like the one pictured above.
Use a water bucket on the side of the sponge facing the cauldron.
Use an empty bucket on the cauldron to fill it up with lava.
Place a new dry sponge to reproduce the bug.
Observed results:
By using sponges to absorb a water source beside a cauldron being filled up by dripping lava, you can effectively bypass the wait time needed for the cauldron to naturally fill up with lava from a dripstone.
Expected results:
This shouldn't be possible.