HTML 5 audio preload error on Safari iOS 17

Hi,

I've got a website working with several audio objects using preloading functionality where we encounter issues using iOS17 safari (works fine on previous versions). I made a test html to reproduce the issue:

https://felegyhazibalazs.hu/test/audiotest.html

There's two buttons on to bottom of the page and when I click on the "Load all" button all audio objects start preloading and after a couple of seconds all player shows "Err" instead of the play button.

The another button "Load only 10" loads 10 files at a time and you need to click on it again to load another 10. Using this button the preloading works until a certain amount of files, after that all previous players - even with the correctly preloaded sources - turn into "Err" state.

I did restart my iphone, tested on multiple devices iphone 12 mini, iphone 13 mini on multiple wifi networks.

Do you have any idea what causes this problem and how to solve it?

Thanks,

Balázs