App Crashes when ChatThreadListController is synchronized in ChatThreadListVC or our own VC

[ChangLiu-Sidebar]

What did you do?

I tried 3 scenarios.

1. Without using ChatThreadListController nor ChatThreadListVC, background the app and foreground the app, no crash.
2. Create a ChatThreadListVC and navigate to it. Background the app and foreground the app. app crash
3. Do not use ChatThreadListVC but build our own VC using ChatThreadListController. Call ChatThreadListController.sychronize() in setUp() function. Background the app and foreground the app. app crash

What did you expect to happen?

The app should not crash

What happened instead?

The app crashed with the following error:
"StreamChat/DatabaseContainer.swift:255: Fatal error: Background context is read only, but calling actions() created changes"

GetStream Environment

GetStream Chat version:
GetStream Chat frameworks: StreamChat, StreamChatUI
iOS version:
Swift version:
Xcode version: 15.1
Device: iPhone Pro 15 Simulator

Additional context

I added some breakpoints and this is the stack triggering the fatal error

Also, if I disconnect the streamClient after enter background, the app will not crash when foreground. However, if I reconnect after foreground, it still crashed.

[ChangLiu-Sidebar]

Another finding, if I downgrade to 4.59.0, the issue is gone.

[nuno-vieira]

Hi @ChangLiu-Sidebar,

Yes this an assertion actually, and on production it won't crash, but this is a known issue and it will be fixed on the next version 👍

We will let you know once we release it.

Best,
Nuno

[nuno-vieira]

This is now fixed on the latest release.

Thank you,
Nuno