Animation type play_once does not work correctly for layouts

[Midnwave]

Here is my layout configuration

button_play:
  images:
    button_play:
      name: button_play
      x: 0
      y: 0
      scale: 1
      layer: 21
      render-scale:
        x: 3
        y: 3
        static-scale: true
  animations:
    type: play_once
    duration: 10
    x-equation: -200 + (t * 20)
    y-equation: 0

When the animation type is set to loop, it works fine, however when set to play_once it does nothing.

Betterhud Version 1.14.0
Server Version Paper 1.21.4