Hello,
We are not able to find this property in MAUI WebView but we are able to find the property in WPF WebView2 control.
This a known issue reported at WindowsAppSDK's GitHub Repo- WebView2 does not support passing in a CoreWebView2Environment #1170. Please follow the progress at GitHub.
Maui App that targets Windows platform is based on WinUI 3. Since WebView2 class with WinUI3 doesn't support this property, you cannot use it with MAUI for now.
(There is a same thread posted at SO)
Best Regards,
Wenyan Zhang
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