Probably a manifestation of some new server cooties, but the Show Raw </> button is taking up to a minute to complete at the moment, leaving empty posts for your enjoyment while you wait...
Hmmm... I thought it works off the stream now, rather than fetching raw on click?
I'll look into it later, maybe I can optimize it. I know there was a barrier to it when it was a userscript, but I think it's doable now. Don't ask me why, it's been a while since that discussion.