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Won't Fix

Votes

0

Found in

2019.4

2020.3.17f1

2021.1

Issue ID

1376345

Regression

Yes

[IL2CPP] Unobserved "Collection was modified" exception appears after building the project

IL2CPP

-

Reproduction steps:
1. Download and open the attached "Repro.zip" project
2. Build the project for standalone with the profiler attached
3. Observe the console window

Expected result: No exceptions appear
Actual result: "InvalidOperationException" exception appears

Reproducible with: 2019.4.33f1, 2020.3.24f1, 2021.1.26f1
Not reproducible with: 2021.2.0f1, 2021.2.6f1, 2022.1.0b2

  1. Resolution Note (2022.2.X):

    The bug was fixed as part of larger set of changes to the networking library. Unity's version of Mono was updated in 2021.2 so this is no longer a problem in that version. Because this issue only causes an exception to be logged we do not plan on taking the untested fix from 7359 into long term support versions of Unity. So unfortunately we do not plan no fixing this issue in versions earlier than Unity 2021.2.

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