High turnover.
Multiple HR complaints to the same managers over 5 years, yet nothing happens.
Office politics everywhere.
Emphasis on keeping the business running over employee morale and autonomy.
Poor management with toxic management styles and the inability to see people for their strengths and weaknesses. Rather, they push their own personal work philosophies and methodologies onto you. Regarding senior management, as long as you're still getting work done, they could care less about the toxic environment you are in.