Same UserData for multiple browsers with different custom scheme registrations

What happened?

I'm not sure if someone wrote the same thing before, but, at least having multiple entries might save someone a lot of time in the future.

• We have an application that creates multiple Browsers, for different use cases. Depending on the use case, there are custom scheme handlers.
• We setup all browsers with a custom user data folder to keep cache files safe.
• We create an environment using the user data folder, and different scheme registrations, depending on the use case.

I had noticed that creating multiple WebView2 objects and calling EnsureCoreWebView2Async with the diverging scheme registrations results in an error (Resource not state...).

We have circumvented that by registering all the custom schemes for all objects and then filtering it inside the resourceRequested/navigationstarting events.

Importance

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

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

126.0.2592.102 x64

SDK Version

No response

Framework

WPF

Operating System

Windows 11

OS Version

No response

Repro steps

create 2 different CoreWebView2EnvironmentOptions with the same userDataFolder BUT different set of SchemeRegistrations.

create 2 webview2 objects and call EnsureCoreWebView2Async.

the second one throws the exception

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

Start with the reported reproduction: create two CoreWebView2EnvironmentOptions instances sharing a userDataFolder but using different SchemeRegistrations, then initialize two WebView2 objects with EnsureCoreWebView2Async. Compare the first and second initialization behavior and confirm whether the second can complete without the reported Resource not state error; no source files or tests are identified in the issue.