Thinking back about my experience with Orion for the last couple months of using it, signing in to various sites is the one thing that's been consistently giving me trouble. In that sense I wish I had named this thread just "Unable to sign in". 🙂
Another one I'm running into tonight is my insurance web site, mysunlife.ca. I tried disabling page tweaks at first, but then even in compatiblity mode it times out after 60 seconds. Like Aviso, I'm able to sign in with Safari no problem although I have a few blockers enabled.
It's not just obscure or random web sites too. Big ones like developer.apple.com and appstoreconnect.apple.com don't work either, including in compatibility mode, so I have to switch to Safari.
This all feels like part of a bigger theme.