problematic
Causing serious trouble or concern that needs to be fixed.
Problematic means causing problems or difficulties, or being questionable in a way that creates concern. When teachers say a student's behavior is problematic, they mean it's creating trouble that needs to be addressed. A problematic policy might be one that sounds good in theory but creates unforeseen difficulties when put into practice.
The word suggests something more serious than a minor inconvenience. A problematic situation raises real questions or obstacles that need attention and can't be easily dismissed. If your science experiment keeps giving wildly different results, that's problematic because you can't trust your data. If a school rule accidentally makes it harder for students with disabilities to participate in activities, that's problematic because it conflicts with fairness and inclusion.
In recent years, people have started using problematic to describe statements or behaviors that might be offensive or harmful, even if that wasn't the intention. Someone might say an old movie is problematic because it includes stereotypes that we now recognize as unfair or hurtful.