When it comes to bosses, over the decades, I have worked for/observed a whole bunch. I think the hard-to-read bosses are the most troublesome. They come in three varieties:
Only Positive – You know you aren’t perfect, so how come this boss won’t tell you how you can improve, or what didn’t go well in that last project. Then, when performance appraisal time comes, this is the boss who constantly delays and eventually skips giving you one. On one hand, it is nice to never be criticized, but you know you are missing some personal development insights.