There's one more I'd add to that list. Not asking for the usual stuff (e.g. references, proof of qualifications etc) after you accept the offer.

The worst three jobs I've been in did that. I found that the work culture in these companies was "impatient" and where corner cutting was the norm. They wanted you to hit the ground running and figure everything out for yourself. They were also very willing to let go of probationary staff after only a few weeks rather than give them the time to get accustomed to the job.