Contacts confusion in Messaging

[jockopablo]

I just went from 8.1 to build 10586. Now the Messaging app isn't recognizing my contacts. When an existing contact sends me a message it only shows their number, not their name. Even if I send a new message to an existing contact by name, when they reply it shows up as a new conversation with just their number showing. It won't show as a reply to the conversation I started with their name.

Is that a known issue?