When attempting to MLG water bucket (which is when you place water at your feet when you fall to stop damage) on bedrock, even from a very short height, the water is placed and picked back up instantly, resulting in fall damage. For the record, this is with one single, properly timed click, not spam clicking which it would make sense to pick it back up. And it is not my timing either, as I can easily MLG water on the Java Edition.

To reproduce: Get a water bucket, go in survival, fall from a height, click once to place the water, and you will see it also picks it back up instantly.