1. Huge Management issues- Some are incapable of doing their jobs, for example, they ask everyone for daily reports but still has no idea of what's going on. Some are taking more credits than they deserve. Also, give promotions/raise to the people they like the most and not the people who perform the best.
2. Career growth – Very limited, they will only promote the people they like. This create huge moral issues/high turn-over rate.
3. Politics – Even in a team, there are several managers, and you can clearly see they do not have same goals. After few years of joining, this is the only company that I felt is going backward, not FORWARD.
Conclusion: Trust Glassdoor reviews, this is definitely not for people who want to learn and make progress for their career. But if you're close to retire and don't care about politics or career growth, this is a great place.