[Problem/Bug]: External File Drags are blocked while a modal dialog is open

[JephDiel]

What happened?

If a modal dialog is open, in my case a file selector, I don't get any drag events in the web layer when dragging a file into the window, either from the modal file selector itself, or my desktop/an explorer.exe window.

This is allowed in Electron, so this feature reduction could interfere with some users workflows.

Importance

Moderate. My app's user experience is affected, but still usable.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

135.0.3179.54

SDK Version

3116.0

Framework

Winforms

Operating System

Windows 11

OS Version

26100.3476

Repro steps

Using the WebView2WindowsFormsBrowser example, add:

window.addEventListener("dragenter", e => { alert("Drag Detected!") }); document.getElementById("openFile").addEventListener("click", e => { window.showOpenFilePicker(); })
to AppStartPage.js, and add:
<button id="openFile">Open File Selector</button>
to AppStartPage.html.

Then run the solution, click the "Open File Selector" button, and attempt to drag a file into the window and you won't see an alert.

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

No response

[sivMSFT]

Hi @JephDiel, could you please clarify whether this is an issue you're encountering or a feature request you're making?

[JephDiel]

I think "issue" is more apt. Events which are fired in Edge and Electron are not firing in WebView2