I am playing on a world that I started on the xbox one version where I killed the ender dragon and have already gone to end cities in the xbox one version.  I converted the world over to the bedrock version still on the xbox one and when I entered the end again the ender dragon had respawned without me having to use end crystals. I used the portal back to the overworld once I killed the ender dragon again and now every time I enter the end and move too close to the center where the dragon would hover my game crashes meaning I have to jump into the void to escape.  The end is basically unacessable for me now.