[Problem/Bug]: edge://crashes page fails with ERR_INVALID_URL

[lezzi]

What happened?

Starting from WebView2 runtime 134.0.3124.51 and above, edge://crashes page no longer loads (fails with ERR_INVALID_URL).

• It still works in Edge.

Importance

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

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

134.0.3124.51

SDK Version

1.0.2526; 1.0.2792

Framework

WPF

Operating System

Windows 11

OS Version

22631.4974

Repro steps

1. Clone the official WebView2WpfBrowser.
2. Either install evergreen WebView2 (ver 134.0.3124.51+) or manually point to a fixed version.
3. Start the WPF browser and navigate to edge://crashes.

Expected: crashes page loads.
Actual: page fails to load.

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Yes, regressed in 134.0.3124.51.

Last working version (if regression)

133.0.3065.92

[prija-microsoft]

This fix is available in latest canary runtime 136.0.3190.0.