Blazor UI Freezes on scroll

[muayyat]

Description

The entire UI freezes when fast scrolling in Blazor MAUI app.

Steps to Reproduce

1. Create a new Blazor MAUI app on Visual Studio
2. Build and launch on Emulator or publish to an actual android device
3. Open the app and just scroll down

Expected Behaviour: Run smoothly
Actual Behaviour: Freezes completely until app closed and restarted

Configuration:

1. Visual Studio for Mac 2022
2. .NET 7.0.2
3. Blazor MAUI

Related issues:

1. Github Issue
2. StackOverflow Question

Link to public reproduction project repository

https://learn.microsoft.com/en-us/aspnet/core/blazor/hybrid/tutorials/maui?view=aspnetcore-7.0&pivots=windows

Version with bug

7.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android, I was not able test on other platforms

Affected platform versions

Android API Level 29 and 33

Did you find any workaround?

No response

Relevant log output

No response

[mkArtakMSFT]

Maybe this is the issue that you're facing: #9882 ?
If so, you may want to manually update the WebView version to the one with the fix to solve the problem. Here are the docs for how to do that: https://learn.microsoft.com/aspnet/core/blazor/hybrid/security/security-considerations?view=aspnetcore-7.0#android

[ghost]

Hi @muayyat. We have added the "s/needs-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[muayyat]

Thanks, I have checked the links shared.

But this is a business application. You can’t tell customers to make some manual downgrades simply to use your app. Will really be helpful a lot if it will be fixed in a patch of .net 7 or in .net 8

[mkArtakMSFT]

@muayyat we think this may be an Android issue. To confirm that, can you please upgrade your Android System WevView to the latest version and see if the issue still reproduces. If so, would be great to get a recording of the behavior.

[ghost]

Hi @muayyat. We have added the "s/needs-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[ghost]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

[muayyat]

I figured out the freezing happens when:

1. A code breaks anywhere in the blazor application
2. Js Interop is involved and its invokation breaks

I was able to do away completely with JS and ensured on all ends the blazor never breaks.

This solved it.