I had this happen to me just now on the Xbox One Bedrock 1.4.2 version.
I had died just outside outside the tower circle. I wasn't that far away. Came back and he was floating/hovering on the far side about a block above the ground.
I got to hit him once and then nothing. I left using the now open portal and came back. Then nothing. He disappeared and now I got an egg showing up. I did not however get the little portal to go to the end city.
I did not receive any achievements, exp or the chance to get dragons breath.
How can this be an identical issue another user has at the same time with the same update on an account that WORKS with other platforms but the Xbox version of the game?
I can turn off the account settings, (block) and get the issue to appear on the other platforms and turn them on and get it to correct by allowing settings and the Xbox version still doesn't accept the changes. Thats not an account issue, thats game side issue. Don't dismiss it because the bug report has the word account in it.
Other report you noted "In general, account issues are Invalid on the bug tracker, however, this may be an actual bug since a non-child account should not have any restrictions."
so... it COULD be a bug on 10677 but on my report, its account issue? Considering it worked BEFORE the update and now it doesn't. Like microsoft privacy settings just picked people randomly to shut off their access? I just don't feel like playing ping pong, I call MS and they says its Mojang and back and forth. Someone has to take the initiative and say hmm... it WAS working and now its not... Multiple people have the same issue and ?