I noticed that a bug called MCPE-100598 has been fixed in MCBE 1.20.40. However, the mechanism of the bucket is still inconsistent with Java Edition. In Java Edition, although pressing the right mouse button for a long time will result in a water collection delay of few ticks, pressing the right mouse button twice quickly does not have such a delay, it just takes back immediately. But in Bedrock Edition, no matter what you do, you have to wait a few ticks before you can take it back. This will lead to serious consequences, for example, if you put the water in the wrong place, you can't take it back immediately, which will make water flows everywhere and destroys a lot of things. When talking about MCPE-100598, this is indeed a problem. When you press the right mouse button for a long time, you should not take back the water instantly, but when you double-click the right mouse button quickly, it should be taken back immediately. This update is obviously inappropriate, and MCPE-100598 still needs a new repair.

Expected Result

When you long-press the right mouse button, it should have a delay to take the liquid back.

When you double-click the right mouse button, it should take the water immediately. 

Observed Result

No matter how you control the mouse, the bucket only takes back the liquid after a few ticks.