dotnet code setting User.id not showing up in iOS events

[gywright]

Package

Sentry

.NET Flavor

.NET

.NET Version

8.0.6 (and some on versions from 8.0.0 to 8.0.7, error still seen in all)

OS

iOS

SDK Version

4.4

Self-Hosted Sentry Version

No response

Steps to Reproduce

Image attached describes code used to set User.Id and User.Username. This provides values for Android devices, but not for iOS devices. This code block comes directly after Sentry .init block. Localhost testing and logging show id does have value just before code block for iOS device tested.

Expected Result

Expected to see User.Id and User.Username values for both Android and iOS.

Actual Result

No values for iOS devices. Customer believes this did work during initial testing, but no values seen in the last 90 days given code used (shown above).

[jamescrosswell]

@gywright when you initialise Sentry, are you setting EnableScopeSync = true?

sentry-dotnet/src/Sentry/SentryOptions.cs

Lines 87 to 90 in 708c2e9

	/// <summary>
	/// If true, the SDK's scope will be synced with the observed scope.
	/// </summary>
	public bool EnableScopeSync { get; set; }

[bitsandfoxes]

@jamescrosswell afaik EnableScopeSync cannot be opted-out ouf:

sentry-dotnet/src/Sentry/Platforms/Cocoa/SentrySdk.cs

Lines 189 to 192 in de9278c

	// Set options for the managed SDK that depend on the Cocoa SDK. (The user will not be able to modify these.)
	options.AddEventProcessor(new CocoaEventProcessor());
	options.CrashedLastRun = () => SentryCocoaSdk.CrashedLastRun;
	options.EnableScopeSync = true;

I gave this a try locally and I do get the user reported correctly on events captured through sentry.cocoa.dotnet.
At this point we'll need more information to repro or, ideally, a repro itself to dig into this deeper.

[jamescrosswell]

Closing this as we can't reproduce. Please reopen if you're able to describe how we can reproduce this problem.

[espenrl]

@jamescrosswell I'm experiencing this problem. I have an ISentryEventProcessor which sole purpose is to set SentryEvent.User to a new SentryUser with details. On Android all events has the user details set. On iOS there are no user details.

I don't know which SDK treats the events differently (dotnet / cocoa / native). It could even be Sentry Cloud for that matter (ingestion / processing / view).

I can tell you that events generated from SentrySdk.CaptureException(e) does not have user details on iOS. So that should be the dotnet SDK, right?

Lately I've been having issues in MAUI that stuff stops working in published builds, while working as they should in development. There seems to be a lot of AOT issues lately. Seems like when libraries are preparing themselves for .NET 9 and AOT they break AOT compatibility on .NET 8. So that could also be an issue.

[jamescrosswell]

@bricefriha would you be able to try to reproduce this based on the steps @espenrl describes above?

[espenrl]

@jamescrosswell @bricefriha I've done some more in-depth testing. In most cases the SentryUser is set on the event using a custom ISentryEventProcessor. Using CauseCrash I discovered that the user details are missing on native crashes only. Perhaps my custom event processor never gets the chance to run before the unhandled native crash, I don't know.

[bricefriha]

thanks @espenrl,
That's super useful, I'll take a look at this today

[bricefriha]

I also noticed that events on unhandled crashes, as a whole (when setting the user detail in a custom scope), don't have user details. So yeah, I think we can identify the issue quite consistently now

Perhaps my custom event processor never gets the chance to run before the unhandled native crash, I don't know

@espenrl I checked that, and the event processor seems to run before the event is sent. So, the scope data are being ignored. I will confirm that with other scope-related tests (like adding attachments etc) to confirm

Update

I tested adding other attachments, and they are indeed not considered either. It seems to be related to the same problem, so we won't need to create a separate issue