border-box elements with a padding are wrongly resized, since 1.14.1

The width of the elements "jumps" by the value of the element's padding when box-sizing is set to border-box

Here is a jsfiddle showing the issue. Try resizing the element slowly and you'll notice a width/height jump.

https://jsfiddle.net/frgnt8ms/3/

The behavior was correct in version 1.14.0 (you can try changing the version in the fiddle). The bug started happening in version 1.14.1.