oauth2 fails below ios 16 since yesterday

[iAroc]

Description

heyya. since yesterday, my users cant auth with discord anymore, if they are below ios 16.x (all users that reports the error are on 15.x but not on 16 or higher) it works everywhere else. they just get stuck on a white page on the /oauth2/ url.

managed to get ios simulator running on my mac, and could reproduce the same thing with the simulator there. Console log gives those errors:

https://imgur.com/undFDUZ

Here is my oauth2 link, but you can even go as far as remote everything after the ? in the url and the syntax error stays:

https://discord.com/oauth2/authorize?client_id=741977748771176518&redirect_uri=https%3A%2F%2Fdashboard.sx-pokego.xyz%2Fdiscord%2Fcallback&response_type=code&scope=identify

Steps to Reproduce

1. Open a oauth2 redirect page on ios15.x
2. be stuck on a white page

Expected Behavior

getting redirected to the discord login

Current Behavior

you get stuck on a white page

Screenshots/Videos

https://imgur.com/undFDUZ

Client and System Information

tested on both a real iphone on ios 15.7.5, and running on macos, a iphone simulator for "iphone 13 ios 15.5"

in both cases using the normal onboard safari, no extensions or anything special