Ok. So its something im sorta frustrated with in movie and film plots. Its where the characters seem to intentionally not tell other characters things for apparently no reason. So its like a fair amount of the plot would not exist if the characters would just mention relevant things. This is usually in fantasy types like in particular I am seeing it with the magicians and school spirits. I mean maybe behavior like this is common outside my experience but its weird to me.
It’s a common trope as others have said. It’s more noticeable now because writing isn’t respected in modern media anymore. Scripts are lucky to get a second draft before shooting starts. Writers don’t get the time to workshop ideas to reduce the number of problems like no one talking or everyone being stupid. Another common one is time and space problems with off screen characters. They aren’t always difficult problems to solve, but they can require time to identify and work through them that writers don’t get anymore.