Detached windows are kept in memory during spec run

[mindtraveller]

Test code to reproduce

We have a spec with 30+ tests, all the tests with number 30+ start failing due to memory issues WebAssembly.instantiate(): Out of memory: Cannot allocate Wasm memory for new instance.
Research's shown that it might be related to the fact that the Detached Windows are kept in the memory. It can be easily reproduced by retrying a single test multiple times and then inspecting Memory snapshot. Detached Window instances in turn hold the pointers to the internal objects of our application preventing garbage collection.

Here I restarted test couple of times and the amount of Detached Windows grows.

None of the mentioned in the template of this issue options help:

• experimentalMemoryManagement: true
• numTestsKeptInMemory: 0

Cypress Mode

cypress run

Cypress Version

13.12.0

Browser Version

Chrome 125

Node version

v18.16.1

Operating System

macOS 14.4.1

Memory Debug Logs

cannot get them with the instructions provided

Other

No response

[jennifer-shehane]

To clarify, you're running via cypress open and clicking this retry button multiple times before inspecting the Memory snapshot?

[mindtraveller]

That's right, it's the easiest way to reproduce and debug the issue. Initially we faced the issue during cypress run on CI after we added 30nth test to a spec.

[cypress-app-bot]

This issue has not had any activity in 180 days. Cypress evolves quickly and the reported behavior should be tested on the latest version of Cypress to verify the behavior is still occurring. It will be closed in 14 days if no updates are provided.