WebGL Player leaks memory when allocating delegate functions

Unity: Web Platform

Fixed

2023.3.X

2022.3.X

2021.3.X

Won't Fix

2023.2.X

Fix by improving Web platform documentation to highlight the limitation that WebAssembly VMs cannot collect in the middle of executing C# code. Documentation has been updated here: https://docs.unity3d.com/2023.3/Documentation/Manual/webgl-memory.html.

Cancelling this 2023.2 tech release issue since the support for this release has come to end of life. Cancelling this 2023.2 port case does not affect any LTS or Unity 6 Beta/Preview that remain open.

Issue is expected to happen, Documentation has been updated with additional information. Link for 2021.3: https://docs.unity3d.com/2021.3/Documentation/Manual/webgl-memory.html

How to reproduce:
1. Open the “WebGL_Player_EventLeak_Issue“ project
2. Open the “MemoryTest” scene
3. Make sure to switch the Platform to “WebGL” (File > Build Settings > “WebGL” > “Switch Platform”)
4. Build And Run
5. In the Player press the F key then wait for 2 seconds
6. Press the L key
7. Observe the “Average growth max used” text

Expected result: The average growth is around 0.11 Mb/Frame
Actual result: The average growth is around 0.38 Mb/Frame

Reproducible with: 2021.3.33f1, 2022.3.16f1, 2023.2.4f1, 2023.3.0a19

Reproduced on: Windows 11
Not reproduced on: No other environment tested

Browser reproduced on: Firefox, Edge, Chrome

Notes:
1. Not reproducible in the Editor
2. Not reproducible in the Windows Player

WebGL Player leaks memory when allocating delegate functions

Unity: Web Platform

Fixed

Won't Fix

Prioritise and Follow this issue

Have a workaround or additional info about this issue?

WebGL Player leaks memory when allocating delegate functions

Unity: Web Platform

Statuses

Fixed

Won't Fix

Resolution Notes

2023.3.XFixedFix by improving Web platform documentation to highlight the limitation that WebAssembly VMs cannot collect in the middle of executing C# code. Documentation has been updated here: https://docs.unity3d.com/2023.3/Documentation/Manual/webgl-memory.html.

2023.2.XWon't FixCancelling this 2023.2 tech release issue since the support for this release has come to end of life. Cancelling this 2023.2 port case does not affect any LTS or Unity 6 Beta/Preview that remain open.

2021.3.XFixedIssue is expected to happen, Documentation has been updated with additional information. Link for 2021.3: https://docs.unity3d.com/2021.3/Documentation/Manual/webgl-memory.html

Description

Prioritise and Follow this issue

Have a workaround or additional info about this issue?