problematično

1. (as predicate) problematic; questionable
   Problematično je što niko ne zna pravila. — The problem is that nobody knows the rules.
   Meni je to malo problematično. — That seems a bit problematic to me.
2. problematically
   Projekat se od početka razvijao problematično. — The project developed problematically from the start.

Most often used in the construction problematično je + da/što.