I know that a big part of academic job interviews is for the candidate to evaluate whether they want to be in the department (not only whether the department wants them).
Are there some non-obvious general factors that signal a possibly dysfunctional department, or an otherwise undesirable position, that a candidate should be aware of? For example (but not limited to), is a poorly attended job talk, or only meeting a relatively small fraction of the faculty, a warning sign of something awry?
I'm asking this question because I have had two successful interviews and am weighing competing offers. This has left me considering some of the finer aspects of the interview experience.