Explain in advance：The video is in the attachment below, this time I used the original snapshot version to record, which was launched for the official launcher，The language of the game in the video is Chinese, but it does not affect viewing。

English to Google Translate：
Hello mojang company
I want to report a bug about big_dripleaf
Generally speaking, when a potion or arrow hits big_dripleaf, it will drop immediately.
In other words, if the player stands on big_dripleaf it will slowly fall.
But if the player stands on top of big_dripleaf and waits until big_dripleaf starts to fall, throw a bottle of potion or arrow at the right time, it will immediately drop down, but it will return to its original condition within half a second. It means that when big_dripleaf starts to fall, if there is something that makes big_dripleaf hang directly to the bottom, it will immediately hang down and restore its original condition within half a second.
However, under normal circumstances, big_dripleaf should hang down for a while and then come up again, but after the above operations, it will come immediately.

The video is in the attachment below, this time I used the original snapshot version to record, which was launched for the official launcher

The following is the Chinese description：
您好MOJANG公司
我想汇报一个关于big_dripleaf的bug
一般来说药水或箭砸中big_dripleaf时它会立马垂下去。
或者说如果玩家站在上面big_dripleaf它会慢慢的下落。
但是如果玩家站在big_dripleaf上面并且等到big_dripleaf开始下落的时候看准时机丢一瓶药水或者箭它会立马垂下去，但是会在半秒内恢复原来的状况。意思就是当big_dripleaf开始落下去的时候如果有让big_dripleaf直接垂到底的东西它会立刻垂下去并且在半秒内就恢复原来的情况。
然而正常的情况下应该是big_dripleaf垂下去一段时间再上来，可如果经过上述操作它会立马上来。
视频在下方附件上，这次使用的是原版快照版本录制，为官方启动器启动