I'm new to Intellij and I'm a little confused by something. When I have the Project tree view set to View as packages, one of my modules doesn't show any packages (only the libraries). I have 3 other modules that all show the packages and classes as expected. If I switch to view as projects the offending module does have classes in it's source directory and I can edit them. I'm pretty sure I'm doing something dumb but I can't figure it out.