Winui3 App Page Freeze

[FF69B3]

Describe the bug

Winui3 App Page Freeze

Steps to reproduce the bug

When switching between applications using ALT + TAB, there is a chance that the application may freeze，

It will restore when the Alt key is pressed again.

Expected behavior

No response

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.6.3: 1.6.241114003

Windows version

Windows 11 (24H2): Build 26100

Additional context

No response

[XFEstudio]

Same as this problem
Every time I switch to another window by using alt+tab and switch back, this page will freeze until I press space.

[dim0147]

Video, using mouse wheel & alt tab sometimes cause hang
https://github.com/user-attachments/assets/88a3ecd3-9adf-41f5-b835-fee96095e190
WinUI Gallery v2.5.1

[bogdan-patraucean]

This bug needs to be fixed ASAP, as it makes apps unusable. This was not an issue in 1.5 version. It's not just Alt-Tab, it's just switching from a window to another, one being the app. The issue is happening on Windows 10 as well.

I'm considering downgrading the version if this is not fixed in 1.7. Can't release the app in this state. I would probably wake up with hundreds of bug reports.

There are at least 3 more issues related to this:

• Not possible to focus to a new activated window while being focused outside of VM (Hyper-V) #10124
• Regression: Windows are always "inactive" #10091
• WinUI3 apps using 1.6 SDK stop rendering in remote desktop #10009

[brentesh]

We have a production ERP that is seeing this issue as well and causing quite a few customer complaints. Is there any update on this at all?

[brentesh]

Is there any work-around for this besides just downgrading?

[svsnux]

This bug is causing major issues with our clients...

[nseveno]

Hi, I also have a freeze problem with a WinUI 3 application.

It happens mostly when I Iaunch the application from Visual Studio (with or without a debugger attached).
It happens also sometimes when a ListView is refreshed.
It happens less when executing a Release build, but this is still a big problem.

I'm unable to find the cause.
Please correct this bug ! Or provide a workaround. The 1.6 SDK is unusable with this kind of bug !

[brentesh]

We've moved back to 1.5 until this is resolved.

[bogdan-patraucean]

1.7 released and still not fixed.