Water in cave systems is extremely buggy

Three instances of buggy water in caves:

1. Flowing water "springs" only flow to a limited distance before just stopping outright, even when they should continue flowing. Updating the water blocks does nothing to encourage it to continue flowing.

2. Random water "ponds" appear in caves, manifesting as 1 or 2-block wide strips of water source blocks. These are not present in Java edition and don't seem to be intended as they appear seemingly randomly and cause a lot of issues in cave exploration.

3. When water sources from #2 are removed, oftentimes small sections of the flowing water from them remain intact and only disappear when they are replaced with blocks.

And three more bugs regarding water (not in caves):

1. When placing and quickly removing a water source block using a bucket, if the water is placed in a location that allows it to flow, there is a small window during which the water cannot be interacted with using the bucket again. If the player interacts fast enough the water can be removed again, as in "MLG water bucket" manoeuvres but if they are slightly slower, interacting just as the water begins to flow to the next block, the operation fails and the player is forced to try again. This is a minor issue but still trips me up when working with water.

2. Placement of blocks around flowing water and sometimes lava is seemingly very buggy. When attempting to place a block inside a fluid, where assumedly there is no solid block in range to place the block again, after a few failed attempts the game decides to place the block between the player and the fluid as if the player were able to directly target a fluid source block as if it were a solid block.

3. Player's targeting reticule is sometimes not aligned with the crosshair in the centre of the screen when swimming, especially through flowing water. Attempting to place blocks, mine blocks or attack monsters while swimming in the right conditions results in the action being performed off-centre, with blocks appearing below the crosshair when placed. This seems to have something to do with the player's position changing when entering swim mode but the viewpoint either not changing at all or not changing fast enough.