message: [bugfix] Tab: height calc error when use sticky
diff: <template>
  <div class="van-tabs" :class="[`van-tabs--${type}`]">
  <div
  + ref="wrap"
  class="van-tabs__wrap"
  :class="[`van-tabs__wrap--${position}`, {
  'van-tabs--scrollable': scrollable,
  @@ -133,7 +134,7 @@ export default create({
  onScroll() {
  const scrollTop = scrollUtils.getScrollTop(this.scrollEl);
  const elTopToPageTop = scrollUtils.getElementTop(this.$el);
  - const elBottomToPageTop = elTopToPageTop + this.$el.offsetHeight - this.$refs.nav.offsetHeight;
  + const elBottomToPageTop = elTopToPageTop + this.$el.offsetHeight - this.$refs.wrap.offsetHeight;
  if (scrollTop > elBottomToPageTop) {
  this.position = 'content-bottom';
  } else if (scrollTop > elTopToPageTop) {
  