Strange Resident's Sound

the sound of the inhabitants in the trees

 

Whenever I keep walking around the trees, I hear the sound of FunFun . This bug seems to have been from 1.7.x. And now the sound has been heard up to the latest version. I hope you can fix it quickly.
I uploaded the video on YouTube, so please refer to it.

https://www.youtube.com/watch?v=lGJ-utwNX0s