UWP WinUI2 file open dialog for folder doesn't open

[david-risney]

Description

The input element for choosing a file works but for choosing a directory fails silently in UWP. I tried with latest stable and canary runtimes in the win32 sample app and the UWP WinUI2 sample app and found that the runtime doesn't make a difference, choosing a directory fails silently in UWP and works in Win32.

<!-- Fails in UWP WinUI2, works elsewhere -->
<input type="file" id="FileUpload1" webkitdirectory multiple />
<input type="file" id="FileUpload4" webkitdirectory  />
<!-- Works -->
<input type="file" id="FileUpload2"  />
<input type="file" id="FileUpload3" multiple  />

Version
SDK: 1.0.1018.0
Runtime: Canary 112.0.1722.0, and Stable 110.0.1587.63
Framework: WinUI2 UWP
OS: Win11

Repro Steps
In a WebView2 navigate to https://jsfiddle.net/wkd9p5hj/, press Run, and then click on the first Choose Files button.

Expected: Open file dialog appears
Actual: Nothing happens

AB#43679861

[JonasLor]

We have this issue as well