Process crash after using OpenDefaultDownloadDialog

[lezzi]

Description
Using the CoreWebView2.OpenDefaultDownloadDialog method crashes a WebView2 process.

The issue became reproducible on the Edge Canary 117.0.2026.0 runtime.

Version
SDK: 1.0.1722.45, 1.0.1988-prerelease
Runtime: Edge Canary 117.0.2026.0.
Framework: WPF
OS: Windows 11 Pro 22H2 22621.1992

Regression
Last time it worked properly on the Edge Canary 117.0.2024.0 runtime.

Repro Steps

1. Download and install the latest Edge Canary runtime.
2. Clone the official WebView2WpfBrowser.
3. Modify the CreationProperties to use the BYOWebView2CreationProperties as mentioned in the code comments.
4. Set the BrowserExecutableFolder to the installed Edge Canary runtime folder.
   • The default path looks like C:\Users\Username\AppData\Local\Microsoft\EdgeCore\117.0.2026.0.
5. Start the browser and add the "Downloads" button by using the "View" -> "Create Downloads Button" menu item.
6. Click on the "Downloads" button.

Expected: A default download dialog is shown.
Actual: A browser process crashes.

Screenshots

[novac42]

@lezzi Thanks for reporting the issue. May you share dump of the process?

[lezzi]

@novac42 attaching the WebView2 crash_dump.zip. Let me know if you need anything else.

[lezzi]

Looks like it is no longer reproducible using the new Canary 117.0.2032.0 runtime.

[novac42]

@lezzi Thanks for the update! I will close it for now then and feel free to reopen it if the issue come back