Cannot connect to games across WAN between Android and Amazon Fire

Steps to reproduce:

1. Ensure internet router is configured for port forwarding (TCP/UDP 19132) to the correct internal IP of a device running Android 5+, MCPE 1.1.4
2. Start a game on that device
3. Use a second device running Amazon Fire OS & MCPE 1.1.4 on a different internet connection, and connect to the external IP address of the first

Expected result:

• Game runs across the WAN despite being different platforms

Result:

1. Locating server...
2. Syncing resource packs...
3. Building terrain... [gets stuck]

Used to work in previous versions across different platforms.