Test requests don't stop after test completion if tab is not visible, bug?

[eugeniumegherea]

Initially I thought there's a bug in our application and somehow we were leaking timers, but I was able to reproduce this issue on live cloudflare speed test.

Steps to reproduce:

• open https://speed.cloudflare.com/
• start the test
• switch to other tab or minimize browser window
• come back after a few minutes
• you shall see a loop of network calls like in the video

https://github.com/user-attachments/assets/86f74691-b9f7-485e-8f4a-4e62c692a299

I suspect it has to do something with the performance api and the fact that chrome will aggressively slow down any internal timers if the page is not visible.

Here is the call stack from network: which corresponds to this line: