🤔 The server spits out html when it cannot reach the backend. So one could argue it's a configuration issue because the admin didn't provide enough capacity / didn't set up a proper generic json error for backend failures.

FWIW, Liftoff doesn't handle these super gracefully either.

At any rate I think it's kinda awesome that we get to witness these kinds of infancy problems.

Well, what should Jerboa do? Pretend it received content?

You really shouldn't be expecting any content type when you get any code but a 200. If anything you should expect HTML, then, possibly plain text.

lemmy does not return 502 error codes because 502 means "bad gateway" and lemmy is not acting as a gateway, nginx is. An nginx sends the html. All apps should check the status code for codes like this one that don't come from apps.