When filling a lava/powder snow cauldron with lava/powder snow, it is placed on the ground instead of in the cauldron

When right-clicking onto a water cauldron with a water bucket, the water bucket is emptied into the cauldron.

However, when doing the same with a lava cauldron, the lava is placed.

Video

Minecraft 20w45a - Singleplayer 2020-11-05 17-25-23.mp4

Notes: Also affects powder snow.