[Sticky] scroll-view设定高度后，sticky无法吸顶

tdesign-miniprogram 版本

1.2.3

重现链接

No response

重现步骤

代码如下

<view>
  <scroll-view scroll-y
    style="height:300px;background-color: gray;">
    <view style="height:2000px">
      <view style="height: 200px;"></view>
      <t-sticky offset-top="{{ 100 }}">
        <t-dropdown-menu>
          <t-dropdown-item label="筛选"
            bindchange="onChange">
            <t-tree-select options="{{options}}"
              value="{{value}}"
              bind:change="onChange" />
          </t-dropdown-item>
          <t-dropdown-item label="全部" />
        </t-dropdown-menu>
      </t-sticky>
    </view>
  </scroll-view>
</view>

期望结果

能够在scroll-view布局中吸顶

实际结果

无法触发吸顶效果

基础库版本

No response

补充说明

No response

Reproduce the provided tdesign-miniprogram 1.2.3 example using scroll-view, t-sticky, t-dropdown-menu, and t-tree-select. Start by checking the interaction between the fixed-height scroll-view and t-sticky with offset-top set to 100; done means the sticky content can remain pinned within the scroll-view.