Welcome to the all-new Android Central Forums! - We're still moving some things around, so you may see a few quirks here and there, but we're working on getting things fully completed as soon as possible. For now, take a look around, and if you run into any major issues, please let us know in this thread!
Is this for a Google account contact, or a contact in another account?
Try clearing the app cache and data for the Contacts app in Settings>Apps. (You shouldn't lose any of your contact information, because there's a separate Contacts Storage app for that.)
I wonder if that might have to do with how magnified the screen is -- is that due to DPI adjustment?
Show us a screenshot of what your system settings look like now that you've reverted the Smallest Width to 411. I'm curious to see if it looks more typical, or if it still looks very magnified.