Black Screen when resuming iOS App when debugging

[czuck]

Description

On iOS, when app is minimized and then resumed it displays a black screen. Stop the VS debugger and app resumes properly.

Steps to Reproduce

Create a File New MAUI App.
Run the app.
Minimize the app, then resume it - the first time it normally works properly.
Minimize the app, then resume it - the screen is black. repeat, the issue will persist.
Stop the debugger and resume the app, the screen paints.

Link to public reproduction project repository

No response

Version with bug

9.0.0-rc.1.24453.9

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

iOS 17.6.1

Did you find any workaround?

No response

Relevant log output

No response

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it. Thank you!

Closed similar issues:

• Black screen on iOS (#10314), similarity score: 0.82
• Suspending an iOS app while debugging will lock up the app (#23340), similarity score: 0.81
• Black splash screen on iOS device and simulator (#16945), similarity score: 0.81
• In ios 16 remotely with an emulator, when I open the application it appears on a black screen and the app closes. (#16703), similarity score: 0.78
• iOS not show splash screen (#20171), similarity score: 0.77

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[QianaJiao]

It can be repro on 9.0.0-rc.1.24453.9 & 8.0.82 & 8.0.3, I guess this should not be an SDK issue.
If you open the XAML live Preview windows, this bug will repro. If you do not open it, the bug does not repro.

NOTE: not repro on android and Windows platform.

[jfversluis]

@drasticactions so is this related to the preview or Hot Reload or something maybe?

[drasticactions]

@jfversluis I would need to debug it, but my guess based on that video is "kinda" leaning toward "yes"

Live Preview calls for screenshots from Visual Diagnostics in MAUI to update its view. It could be that calling it either in the background or when the window reloads is causing it to hang. But I don't think it's code directly inside of the hot reload agents that could cause it.

So it could be something that would need to be fixed in MAUI when calling for the screenshots, in the hot reload agents to not try to get screenshots if the app is backgrounded, or both.

It should be moved to VSFeedback for now.

[dotnet-policy-service]

Thanks for the issue report @czuck! This issue appears to be a problem with Visual Studio, so we ask that you use the VS feedback tool to report the issue. That way it will get to the routed to the team that owns this experience in VS.

If you encounter a problem with Visual Studio, we want to know about it so that we can diagnose and fix it. By using the Report a Problem tool, you can collect detailed information about the problem, and send it to Microsoft with just a few button clicks.

1. Go to the Visual Studio for Windows feedback tool or Visual Studio for Mac feedback tool to report the issue
2. Close this bug, and consider adding a link to the VS Feedback issue so that others can follow its activity there.

[dotnet-policy-service]

Thanks for the issue report @czuck! This issue appears to be a problem with Visual Studio (Code), so we ask that you use the VS feedback tool to report the issue. That way it will get to the routed to the team that owns this experience in VS (Code).

If you encounter a problem with Visual Studio or the .NET MAUI VS Code Extension, we want to know about it so that we can diagnose and fix it. By using the Report a Problem tool, you can collect detailed information about the problem, and send it to Microsoft with just a few button clicks.

1. Go to the Visual Studio for Windows feedback tool or .NET MAUI VS Code Extension repository to report the issue
2. Close this bug, and consider adding a link to the VS Feedback issue so that others can follow its activity there.