Vertical scrollbars apprea sometimes

[ohute-couture]

It was fixed to 29ca460 due to the box-sizing =border-box scrolling issue of IE #327.

When box-sizing = border-box, the problem reported in #306 was reoccurring in Chrome. It's the same reason.

var ta = document.querySelector('textarea');
ta.style.height = '1336px';
window.getComputedStyle(ta).height; // 1335.99px
window.offsetHeight //1335 
Math.round(parseFloat(ta.style.height)) //1336 

If box-sizing = border-box in IE is a problem, You just need to check if it is not IE but box-sizing in your code.
or I think we need to set a margin value to avoid unnecessary scrolling.

And,
I think we should only make it happen when the actual height is high. autosize.js#L143
actualHeight !== styleHeight ⇾ actualHeight > styleHeight

Please confirm.