I have defeated the ender dragon a long time ago or a very long time ago and i was able to got to the end citys when throwing a ender pearl in the small bedrock portal in the end after defeating the ender dragon i throw a ender pearl in the small bedrock portal and it just teleport's me to the portal after the ender dragon and my game on minecraft bedrock eddition on my xbox one S it just updated not that long ago.