Open Radar

 
Summary:
When an iMessage is sent from macOS containing both plain text and text with an embedded URL hyperlink, the entire message appears as plain text on iOS.

Steps to Reproduce:
1. Load www.apple.com in Safari for macOS.
2. Right-click "Mac" in the header and select "Copy Link" from the contextual menu.
3. Compose a new iMessage in Messages for macOS.
4. Type "Here's a website about the ".
5. Paste the copied link.
6. Send the iMessage.
7. Read the iMessage in Messages for iOS and tap the word "Mac".

Expected Results:
The word "Mac" in the iMessage should be underlined. Tapping it should open a link to www.apple.com/mac/.

Actual Results:
The word "Mac" in the iMessage is not underlined. Tapping it does nothing.

Version:
Sending: macOS 10.12.3 (16D32); Messages 10.0 (5500)
Receiving: iOS 10.2.1 (14D27)

Notes:
The mixture of plain text and linked text in the iMessage is key to reproducing this bug. If the entire contents of the message is text with an embedded hyperlink, it appears correctly in both OSs.

Configuration:
Sending: MacBookPro10,1 running macOS 10.12.3 (16D32)
Receiving: iPhone 6 NG4W2LL/A running iOS 10.2.1 (14D27)