The PlayerBlockPlacement packet is also responsible for any block interaction ie. opening chests or filling bottles from a cauldron. The current block placement system have to be reworked into the following three steps.

1. Try to interact with the block

2. Try to place the held item at the location

3. Try to place the held item at the location + face

4. Interacting with blocks simple match over held item and block.

match (held_item, from_block) {
  (_, Block::Chest(_)) => open_chest(),
  (Item::Bottle, Block::Cauldron(_)) => fill_bottle(),
  ...
}

2. Simple match on the from block, ie. can the block be replaced

match from_block {
  Block::Air | Block::CaveAir | Block::Grass ... => place_block
}
// Handle waterlog
match (held_item, from_block) {
   (Item::WaterBucket, Block::Fence) => Block::Fence(data.waterlogged = true),
  ...
}

3. This step is identical to step 2. but the from block = state.block_at(location + face).