5.1.15: animate: type is undefined does not disable animation #6162

Problem

Take a simple barchart

chart
    .interval()
    .animate({ enter: { type: undefined } }) <------------
    .data(data)
    .encode('x', 'genre')
    .encode('y', 'sold');

It still animates. In order to prevent the animation, you also need to add "duration: 0" like so:

chart
    .interval()
    .animate({ enter: { type: undefined, duration: 0 } }) <------------
    .data(data)
    .encode('x', 'genre')
    .encode('y', 'sold');

Which I believe is not correct. I suspect the animation is still enabled, just not visible any longer. It should not be anabled at all

Software macOS, Chrome