Steps to Reproduce

1. run the attached zul

Current Result

scroll bar is at the bottom

Expected Result

scroll bar is at the beginning

Debug Information

• selecting the last item only also causes the bug.
• Might require spec discussion. such "scroll to selection" behavior is not always a bug to users.
  1. When a user interacts with UI, a user action leads to selecting a listitem, it's good to scroll to selected one. So that the user can see the result immediately.
  2. During page creation/rendering, a user expects to see the initial state of a listbox, so it's better to let scrollbar be at the top.

Workaround

<zk xmlns:n="native" xmlns:w="client">
<listbox w:onBind="this._shallScrollIntoView=false">
</listbox>
</zk>