[Windows][Webview] Theia Browser Webview doesn't work for vscode extensions

[nordanz]

Hello There,

I have some extensions with some webview panels. they are working fine in electron but not in the browser mode when I run the Theia in Windows OS (They are working on Linux machine). is there a restriction for webviews in windows or this is a bug?

Windows OS: Windows 10, 11
Browser: Edge, Firefox
Theia Version: 1.62.0, 1.63.0

This is the warning I see in windows. An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing. about:blank#blocked

Thanks.

[msujew]

Hey @nordanz,

I just confirmed that webviews continue to work on Windows (Firefox) for me. Since the feature also works for you on Linux and we provide the same options to the iframes, independent of the host OS, I'm not sure what to recommend here - looks like an OS issue to me. Perhaps some weird security/firewall settings?

[nordanz]

Oh, can be. so let me try it on a normal windows and let you know again. thanks for prompt checking.