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[Bug] [iOS] Apps sometimes freeze/hang on iOS 15 #14782

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avorobjovs opened this issue Oct 22, 2021 · 7 comments
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[Bug] [iOS] Apps sometimes freeze/hang on iOS 15 #14782

avorobjovs opened this issue Oct 22, 2021 · 7 comments
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i/high Completely doesn't work, crashes, or is unusably slow, has no obvious workaround; occurs less often iOS 15 p/iOS 🍎 s/needs-info ❓ A question has been asked that requires an answer before work can continue on this issue. s/unverified New report that has yet to be verified t/bug 🐛

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@avorobjovs
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avorobjovs commented Oct 22, 2021 •
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Description

After updating iPhone devices to iOS version 15.x, our app sometimes freezes/hangs during usage and after about 1 minute the app closes automatically. It happens in all environments including production.

After that, we have collected several iOS Crash Reports. All of them are related to some resources issues.
But it is strange because we develop and use our app already 5 years and I didn't see such behavior before.

Could you please explain to me, what is wrong with our app? I provide a ZIP file with several iOS Crash Reports.
KCMobilityTechnicianiOS_resources.zip

Thank you in advance!

Basic Information

  • Version with issue: 5.0.0.x
  • Last known good version: 4.4.0.991864
  • Platform Target Frameworks:
    • iOS: 15.0, 15.0.1, 15.0.2, 15.1 beta
  • Affected Devices: many different iPhone devices

Environment

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Microsoft Visual Studio Enterprise 2019
Version 16.11.5
VisualStudio.16.Release/16.11.5+31729.503
Microsoft .NET Framework
Version 4.8.04084

Installed Version: Enterprise

Architecture Diagrams and Analysis Tools   00435-60000-00000-AA972
Microsoft Architecture Diagrams and Analysis Tools

Visual C++ 2019   00435-60000-00000-AA972
Microsoft Visual C++ 2019

ADL Tools Service Provider   1.0
This package contains services used by Data Lake tools

ASA Service Provider   1.0

ASP.NET and Web Tools 2019   16.11.75.64347
ASP.NET and Web Tools 2019

ASP.NET Web Frameworks and Tools 2012   16.11.75.64347
For additional information, visit https://www.asp.net/

ASP.NET Web Frameworks and Tools 2019   16.11.75.64347
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0   16.11.75.64347
Azure App Service Tools v3.0.0

Azure Data Lake Node   1.0
This package contains the Data Lake integration nodes for Server Explorer.

Azure Data Lake Tools for Visual Studio   2.6.1000.0
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools   16.11.75.64347
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio   2.6.1000.0
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools   3.11.0-4.21403.6+ae1fff344d46976624e68ae17164e0607ab68b10
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Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus   1.2.6 (master@34d6af2)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

Fabric.DiagnosticEvents   1.0
Fabric Diagnostic Events

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IntelliCode Extension   1.0
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Microsoft Azure HDInsight Azure Node   2.6.1000.0
HDInsight Node under Azure Node

Microsoft Azure Hive Query Language Service   2.6.1000.0
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Microsoft Azure Service Fabric Tools for Visual Studio   16.10
Microsoft Azure Service Fabric Tools for Visual Studio

Microsoft Azure Stream Analytics Language Service   2.6.1000.0
Language service for Azure Stream Analytics

Microsoft Azure Stream Analytics Node   1.0
Azure Stream Analytics Node under Azure Node

Microsoft Azure Tools for Visual Studio   2.9
Support for Azure Cloud Services projects

Microsoft Continuous Delivery Tools for Visual Studio   0.4
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Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager   2.1.113+g422d40002e.RR
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual C++ Wizards   1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio Tools for Containers   1.2
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Microsoft Visual Studio VC Package   1.0
Microsoft Visual Studio VC Package

Mono Debugging for Visual Studio   16.10.15 (552afdf)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager   5.11.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension   1.0
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Razor (ASP.NET Core)   16.1.0.2122504+13c05c96ea6bdbe550bd88b0bf6cdddf8cde1725
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SQL Server Data Tools   16.0.62107.28140
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SQL Server Reporting Services   15.0.19528.0
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Version 15.0.19528.0

tangible T4 Editor   2.5.0
tangible engineering GmbH

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Hosting json editor into a tool window

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Visual F# Tools   16.11.0-beta.21322.6+488cc578cafcd261d90d748d8aaa7b8b091232dc
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Visual Studio Code Debug Adapter Host Package   1.0
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Visual Studio Container Tools Extensions   1.0
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Visual Studio Tools for Containers   1.0
Visual Studio Tools for Containers

Visual Studio Tools for Kubernetes   1.0
Visual Studio Tools for Kubernetes

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Foo   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

Xamarin   16.11.000.190 (d16-11@2391ed9)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   16.11.0.17 (remotes/origin/11e0001f0b17269345e80b58fb3adf1ba4efe2cd@11e0001f0)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   16.10.5 (355b57a)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   11.4.0.5 (d16-11/7776c9f)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: c633fe9
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    Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-11@683f375


Xamarin.iOS and Xamarin.Mac SDK   15.0.0.8 (0796d78dc)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.
@avorobjovs avorobjovs added s/unverified New report that has yet to be verified t/bug 🐛 labels Oct 22, 2021
@avorobjovs
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avorobjovs commented Oct 22, 2021 •
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Other developers also mention that their apps sometimes freeze/hang on iOS 15.
#14750 (comment)

@avorobjovs avorobjovs changed the title [Bug] [iOS] Apps sometimes freeze/hang and restart on iOS 15 [Bug] [iOS] Apps sometimes freeze/hang on iOS 15 Oct 22, 2021
@justin-loverme
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Our app is having a similar issue as well #14783

@FDDenny FDDenny mentioned this issue Oct 22, 2021
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@AndreasReitberger
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Are you using Shell? I had the same issue when I set Shell.NavBarIsVisible="False"
#14714

@avorobjovs
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No, I use classic navigation with FreshMvvm framework.

@jsuarezruiz jsuarezruiz added iOS 15 p/iOS 🍎 i/high Completely doesn't work, crashes, or is unusably slow, has no obvious workaround; occurs less often labels Oct 25, 2021
@jsuarezruiz jsuarezruiz added the s/needs-info ❓ A question has been asked that requires an answer before work can continue on this issue. label Oct 26, 2021
@avorobjovs
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Hi,
I found that if build the app using the latest versions of Xamarin.iOS and Xcode, then the application no longer freezes or crashes.
Currently, we use Xamarin.iOS 15.4 and Xcode 13.2.1. And we have no freezes or crashes.

@jfversluis
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Thanks for letting us know! I hope that is still the case and it was just some bug in iOS or the Apple SDKs then.

@avorobjovs
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Hi @jfversluis,

Unfortunately, we still have freezes, hangs, and crashes of our app on iOS 15. Even if it is built with Xamarin.iOS 15.4 and Xcode 13.2.1.
So, I think this bug should be reopened.

@avorobjovs avorobjovs mentioned this issue Apr 1, 2022
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i/high Completely doesn't work, crashes, or is unusably slow, has no obvious workaround; occurs less often iOS 15 p/iOS 🍎 s/needs-info ❓ A question has been asked that requires an answer before work can continue on this issue. s/unverified New report that has yet to be verified t/bug 🐛
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@jfversluis @AndreasReitberger @jsuarezruiz @avorobjovs @justin-loverme