there seem to be a problem into the handling of safari into iOS 15.5
But here is a non exhaustive list where the app is not working anymore forum.plex.tv
and the forum of fedoraproject
the login system is working fine under edge for example into the same IOS version. So I guess the problem reside into the safari policies …
Neither Firefox 102.0 on macOS 12.4 not Safari on iPadOS 15.5 can find that site.
And I can’t find a fedoraproject forum on the Fairphone forums — but my eyes might be tired after watching the finish of TdF Stage 4 a few minutes ago — and the Discourse search can’t find it either. Nor can I find any obvious forums on fedoraproject.org
The pukka iPadOS app has no problem locating the fairphone forums.