Search Issue Tracker

Fixed in 2020.1.X



Found in




Issue ID




[iOS] Crash on DebugStringToFilePostprocessedStacktrace or UpdateTpl() when opening Control Center with particle system active

Visual Effects - Legacy


How to reproduce:
1. Build the "" project for iOS
2. Build & Run the project to the device via Xcode
3. Move your finger around the screen (particle follows it)
4. Open the Control Center (Drag up from the bottom of the device)
5. Close the Control Center (Drag the menu down)
6. If Unity didn't crash, repeat from step 3.

Actual result: Unity crashes.

Reproducible with: 2017.4.33f1, 2018.4.12f1, 2019.2.10f1, 2019.3.0b8, 2020.1.0a10.

Devices reproducible with:
- iPhone 7 (iOS 12.3.1)
- iPhone 7 Plus (iOS 11.4.1)

Devices not reproducible with:
- iPhone XR (iOS 12.0)
- iPhone X (iOS 13.0)
- iPad Mini 4 (iOS 11.4)

Fixed in 2020.1.0a12.

Comments (3)

  1. martinpi

    Jan 12, 2021 10:43

    I seem to have run into exactly this one on a 7th-generation iPad. Would be lovely if the fix was backported to the last LTS because there seems to be no documented workaround.

  2. studentvz

    Oct 09, 2020 10:36

    Is this backported to 2018LTS, 2019LTS? Which version?

  3. Lex3425

    Apr 25, 2020 19:32

    I recall this issue coming about when utilizing my iPhone and witnessing Unity crashing from closing the close center. Glad to see this fix and now this won't be impacting individuals who are using an iPhone to view our website We always appreciate the promptness of Unity fixes from this site.

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.