Unity Issue Tracker - "InvalidOperationException: Collection was modified; enumeration operation may not execute." is thrown when clearing inactive Background Tasks

Fixed

2023.3.X

2023.2.X

2023.1.X

2022.3.X

Fixed InvalidOperationException when clearing inactive background progresses.

How to reproduce:
1. Open the attached project "IN-57433.zip"
2. Open Assets/Scenes/SampleScene.unity
3. Enter Play Mode
4. Open Window>Panels>1 Background Tasks
5. Click "Clear inactive" in the Background Tasks window

Expected results: No errors are thrown in the Console window
Actual results: "InvalidOperationException: Collection was modified; enumeration operation may not execute." is thrown

Reproducible with: 2022.1.0a10, 2022.3.11f1, 2023.1.17f1, 2023.2.0b14, 2023.3.0a11
Not reproducible with: 2021.3.31f1, 2022.1.0a9

Reproducible on: Windows 11 22H2
Not reproducible on: No other environment tested

"InvalidOperationException: Collection was modified; enumeration operation may not execute." is thrown when clearing inactive Background Tasks

Unity: Progress Window

Fixed

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"InvalidOperationException: Collection was modified; enumeration operation may not execute." is thrown when clearing inactive Background Tasks

Unity: Progress Window

Statuses

Fixed

Resolution Notes

2023.3.XFixedFixed InvalidOperationException when clearing inactive background progresses.

2023.2.XFixedFixed InvalidOperationException when clearing inactive background progresses.

2023.1.XFixedFixed InvalidOperationException when clearing inactive background progresses.

2022.3.XFixedFixed InvalidOperationException when clearing inactive background progresses.

Description

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Have a workaround or additional info about this issue?