Memory access out of bounds error is thrown when launching Web builds with C/C++ Multithreading enabled

Steps to reproduce:

1. Open the attached project
2. Switch to Web Platform
3. Build and Run the project
4. Observe the launch of the built project (the issue is inconsistent and may require several builds/page refreshes to occur)

Actual results: Build freezes and throws:

test.framework.js.br:9 Uncaught exception from main loop:
_JS_CallAsLongAsNoExceptionsSeen @ test.framework.js.br:9
test.framework.js.br:9 RuntimeError: memory access out of bounds

Expected results: Build launches without freezing or throwing errors

Reproducible with versions: 6000.0.40f1, 6000.1.0b9, 6000.2.0a6

Can’t test with versions: 2022.3.60f1

Tested on (OS): macOS 15.3, Ubuntu 24.04

Tested on Browsers: Google Chrome 133.0.6943.142 (Official Build) (arm64), Safari Version 18.3 (20620.2.4.11.5)

Notes:

• The build freeze/memory access out of bounds error does not occur if Native C/C++ Multithreading is disabled in the Player settings -> Publishing Settings section