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.
My guess is that a part of the popularity of the trope comes from shows used to needing to return to the status quo at the end of the episode, plus needing ways to create conflict/drama without actually making their characters bad or evil. “It was all just a big misunderstanding!” type plots do those well, even if they end up making watching frustrating because it turns into 23 minutes of watching people fail to do the one simple thing that would resolve everything.
Honestly im finding all the characters are not really heroes anymore with most doing various honestly unforgivable things that all the characters sorta shrug their shoulders over and go. deep down we are good.