The End background music / music plays seamlessly sounds like unstable or corrupted

Sometimes while playing, the music will at seemingly random intervals start juttering. This will last a few seconds (it used to go forever until restart in older versions), and then return to normal.
I expected:
That the music plays seemlessly
What happened:
The music jutters rather like a jackhammer.

• Music file location:
  C:~~~\.minecraft\assets\objects\47\47800737d078e751698df291054adc596ba8195a

The End background music sounds like unstable and corrupted.

Reproduce steps:
1.Music ＆ Sound Options → Music: 100%
2.Arrives End.
3.Kill to Ender Dragon.
4.Wait for the music to start playing.

Video 1:
https://www.youtube.com/watch?v=xKwZGIO40is&feature=youtu.be

Video 2:
Occurrence time:
(1) 00:20 ~ 01:40
(2) 12:10 ~ 12:20
(3) 13:07 ~ 13:09
(4) 14:47 ~ 15:26
https://www.youtube.com/watch?v=avocp3D-zDE