iOS上会忽略关键帧内的不可动画的属性

我知道不可动画的属性不会在动画中插值,但我的理解是这些值至少(突然)计算出来.

所以,例如,假设我想要将溢出属性(不可动画,即not in this list)“动画”从隐藏到可见 – 我希望计算出的值会适当改变.

(我尝试在spec中寻找此但未能明确提到它)

这实际上是在Chrome和Firefox中发生的事情,但在iOS上却没有.(Safari,iPhonE)

.animate {
  border: 5px solid green;
  width: 200px;
  height: 100px;
  animation: 3s resetOverflow;
}
@keyframes resetOverflow {
  from {
    overflow: hidden;
    color: red;
  }
  to { 
    overflow: visible;
    color: green;
  }
}

<div class="animate">Lorem Ipsum is simply dummy text of the prinTing and typesetTing industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s when an unkNown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries,but also the leap into electronic typesetTing,remaining essentially unchanged. It was popularised in </div>

Codepen Demo

请注意,在Chrome和Firefox上,溢出值从隐藏变为可见,但在iOS上,溢出值似乎完全被忽略 – 保持其默认值为visible.

注意：

1)我添加了颜色的动画,只是为了表明动画属性在iOS中正常工作

2)似乎iOS忽略了所有不可动画的属性(不仅仅是溢出) – 这里是another demo,它试图为position属性设置动画.

3)我知道这可以用javascript – demo完成….但我想用CSS做到这一点.

这是iOS中的错误吗？任何解决方法？

.animate {
  border: 5px solid green;
  width: 200px;
  height: 100px;
  -webkit-animation: 3s resetOverflow;
  animation: 3s resetOverflow;
}

@-webkit-keyframes resetOverflow {
  from {
    overflow: hidden;
    color: red;
  }
  to {
    overflow: visible;
    color: green;
  }
}

@keyframes resetOverflow {
  from {
    overflow: hidden;
    color: red;
  }
  to {
    overflow: visible;
    color: green;
  }
}

<div class="animate">Lorem Ipsum is simply dummy text of the prinTing and typesetTing industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s when an unkNown printer took a galley of type and scrambled it to make a type specimen book. It has
  survived not only five centuries,remaining essentially unchanged. It was popularised in </div>