I agree, that’s the same issue I faced after having registered today. It took me quite a while to understand that I had to click the signs to see anything.
Maybe five minutes. I first tried disabling my adblocker, then switched to desktop view, then played around with different zoom settings. Then logged out and compared the threads there with the view I had when logged in, etc 😅 Maybe a little info box for onboarding would be a good idea, too.