Gain experience but with little-to-no guidance, including things you have no experience in (baptism by fire). Managers and executives are too overworked to provide mentoring.
Nepotism. CEO hires a significant amount of family, even if they have no experience. Some family members are extremely difficult to work with. Even collaborative family members can be inadvertently hard to work with because it is a touchy situation to be in, there is almost never any recourse for behavior or performance. The office politics of this can be extremely draining and kill employee morale. Company decisions made on family vacations without consulting non-family employees who are also affected/involved.
CEO doesn't have a clear vision for the company and is distracted and impulsive. Spends company funds to take the company in "new and innovative" directions, only to backpedal and change course a year or two later. Quick to excite and jump into new endeavors without any careful consideration, and negatively affects company later.
No opportunity for career growth.
Significant employee turnover and abysmal employee morale - yet this hasn't clued CEO in to try and find ways to properly appreciate and value employees.
Poor communication throughout company, includes vision, new projects or directions (maybe for the best, avoids whiplash from the CEO's whims), new hires or terminations - even when it affects employees/departments.