[Problem/Bug]: Webview2 has a blank screen when restored from Minimized state

[riyafa]

What happened?

Webview2 has a blank screen when restored from minimized state in some user's machines. Then when we click some where else outside the window the page paints itself and shows the page correctly.

We have the following code for minimising webview:

            window.WindowState = WindowState.Minimized;

We have the following code for restoring:

            window.WindowState = WindowState.Normal;

Screenshot of blank screen:

Importance

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

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

134.0.3124.72

SDK Version

1.0.2849.39

Framework

WPF

Operating System

Windows 10

OS Version

No response

Repro steps

When the window is minimised and restored on some client machines running Windows 10 Enterprise we can see this happening. Though consistent in these machines, they are not reproduceable in all machines.

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

No, this never worked

Last working version (if regression)

No response

[riyafa]

Update: Introducing a loading when it restores seems to fix this, but there's some issue in webview2 that causes the blank screen in the first place.

[SamsidParty]

I am able to reproduce this issue on Windows 11 24H2 and C++, it's not specific to Windows 10 or WPF.

[ryanaltair]

@riyafa hi, we met this problem, too. Please introduce your workaround.