In both Edge and Firefox in Windows, clicking on a post to open in the kinda/sorta popup window loads, but “Oops something went wrong” instead of loading comments. I’ve turned off my ad blocker(s), no change. I don’t have any other extensions that would interfere.
If I specifically open in a new tab, they load fine.
Just started today with no changes on my end.
Just the one login. And multiple browsers affected.
Erroneous behavior confirmed by a few others, one of whom pointed me to https://www.redditstatus.com/ which confirmed the issue on the system side.