Pigs run in circles when on top of azalea

Pigs constantly run in circles while simultaneously walking on azalea. The spinning stops briefly when the pig changes the direction its facing then starts to go in circles again when it resumes walking.  This will keep happening until the pig is on longer on the azalea. After leaving the azalea, the normal behaviour will resume.

This can be easily reproduced by spawning a pig on an azalea block