css3 - 这种情景怎么解释？display:flex 遭遇 white-space: nowrap;

Question

html如下，使用了flex-box布局，左边图片的img-box定宽，右边的css定义了flex-item，然后对shop-name进行了单行不换行截断，这时候就发现左边的图片被挤扁了，小于定的宽度。发生这个情况在chrome上，ios和安卓的微信下正常.

chrome效果见图：

<a href="#" class="coupons-item flex">
    <p class="img-box"><img src="1.jpg" /></p>
    <p class="flex-item">
        <h3 class="shop-name">有家餐厅（京华城店）</h3>
        <p class="text">满100减20</p>
    </p>
</a>

(scss)

.coupons-item{
  padding:1rem;
  color:#000;
  text-decoration: none;
  border-bottom:1px solid $gray-border-color;
  .img-box{
    width:6rem;
    height:6rem;
    margin-right:1rem;
    @include radius(50%);
    overflow: hidden;
    img{
      display: block;
      width:100%;
      height:100%;
      @include radius(50%);
    }
  }
  .shop-name{
    line-height:2;
    height:3.6rem;
    font-weight:normal;
    font-size:1.8rem;
    overflow: hidden;
    -ms-text-overflow: ellipsis;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .text{
    font-size:1.4rem;
  }
}

Answer 1

Encountered this before, solution:
First .flex-item set the minimum width

min-width:0

Then .shopname set the width

width:100%

Answer 2

Try defining the width of shop-name and floating it

Answer 3

Try setting a maximum width for .shop-name