This is a basic feature in a Skype for Business. I screen calls based on whether someone is in my address book. Now I take a gamble answering calls. Will it be a telemarketer? When will this be resolved?
Kinda is a bug fix. If I look up the user in address book and dial out - The name shows up, and a photo. If they call me back, caller ID works showing their name. BUT once I close the app on my iPhone and reopen, all the name and photo is replaced with a number.