Slack can no longer be logged into from Firefox

reddit.com

I just used the Firefox version of Slack a few minutes ago.

Maybe I'm still logged in from a previous session (and if I logged out, I'd be unable to log back in.)

Or maybe this has been fixed?

I just logged into Slack from Firefox. I haven't logged into Slack for over a year. If there was a bug, it wasn't global (or it has been fixed).

Very strange. I just tried again now and it still loads a blank page for any workspace I try to open.

I wasn't the creator of the Reddit thread and just discovered it when I couldn't log in this morning.