My family plays this version across multiple platforms (PC and iOS). However, the main save of the game is stored on the Xbox 1 Console.  

We defeated the End Dragon which produced a portal to the area of the End that contains the End city. We used the portal multiple times in our quest to find the End City. Once the city was found, we began to loot the city. While looting the city, we died and when trying to use the portal again, it teleports us to the location of the Ender Dragon pool. We are unable to get to the End City at this point. 

https://youtu.be/mT72d1O6ycI Here is a video recording of the issue.