New interpolate animation type doesn't work for water

using the interpolate animation type:

{
  "animation": {
    "interpolate": true,
    "frametime": 15,
    "frames": [
      0,
      1,
      2,
      3,
      2,
      1,
      0
    ]
  }
}

Water ignores that its there, it animates by jumping from frame to frame. I tested by copying and pasting the texture and mcmeta files and renaming them to a solid block, for which the interpolate feature did work.