Sadly, your solution does not work in my case 😔.
It's kinda weird indeed - works flawlessly on Chrome, spams errors on Safari.
I'm really starting to think it's Safari's bug...
We're inspired by phpBB, in a sense... we hope to be as popular as they are some day 😄
I now use /api/me to get auth info.
i'm sure many beginners would love to start with your knowledge 😉
Site isn't breaking a sweat even with the five fold bigger load than normal busy days. We are really impressed.