[Problem/Bug]: WebView2 control throws OutOfMemoryException on call to EnsureCoreWebView2Async()

What happened?

Our WinUI 3 (WindowsAppSdk) app allows users to navigate to various pages to define a model, compute, and review tabular and graphic outputs. Some of these pages have WebView2 controls on them to show their content. Once we've loaded a WebView2 control 252 times, the 253rd attempt throws an OutOfMemory exception when we call EnsureCoreWebView2Async() when initializing the WebView2 control.

This was tested with the following configurations with the same behavior:

• Windows 10 (10.0.19045), WebView Runtime 125.0.2535.67 and 124.0.2478.109
• Windows 11 (10.0.22631), WebView Runtime 125.0.2535.67

Importance

Important. My app's user experience is significantly compromised.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

125.0.2535.67, 124.0.2478.109

SDK Version

1.0.2210.55

Framework

WinUI3/WinAppSDK

Operating System

Windows 10, Windows 11

OS Version

10.0.19045, 10.0.22631

Repro steps

• Run the attached application's Debug|x86 unpackaged configuration
• Click on a NavigationViewItem to load a page containing a single WebView2 control
• Continue clicking on a NavigationViewItem to load subsequent pages
• Once you start to load the 253rd page, it will crash with an OutOfMemory exception when the page calls the WebView2's EnsureCoreWebView2Async() method.

WebViewTest.zip

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

AB#51806338