Hi. It just looks like either the offline symbol table (OST) hasn’t been generated completely or it’s not being resolved properly. Do you see any errors in idea.log after OST generation? You can find that using Help | Show Log in Explorer/Finder/Files. Feel free to send that file with me via email and I can tell you what I see. Please also send the project’s .iml file along with it for review so I can see how it’s configured.
Regards,
Scott Wells