Where are my movies in TV-app?

Hey FLX90

If you have iTunes set up to home share in the menu, then you might just need to make sure your iPhone is signed in to home share as well. You'll find that setting for TV under Settings > TV > iTunes Videos > Home Sharing - Sign in

More info here: Use Home Sharing to share iTunes content with other devices - Apple Support

If that alone doesn't work, consider going through that article like a checklist and make sure everything is setup correctly.

If still not fixed, restart each of the devices (computer, iPhone, and router if you can)

Best of luck

Well darn. That's usually the solution. Maybe something is wonky with the new app?

I'd recommend to give this article a go (if you haven't, and it sounds like you've already done most of it), Get help with Home Sharing for iTunes libraries - Apple Support

If still not fixed by the time you get to the bottom, then the best I can think would be to do what it suggests and contact Apple Support - make them work for their money. lol

Best of luck dude.