I turned back to easy after disabling the pillars I know you can't kill it in peaceful
This has happened to me. Xbox bedrock version. The recent changes to the ender dragons attacks are making it near impossible to kill and now I have 3 dragons. Haven't been able to kill a single one. Switched to peaceful and they are still wrecking me. Finally got all the pillars out and haven't been able to kill them. Should have end reset option on bedrock or disable autosave.
Can confirm, this is happening on my game. 100 percent of the time. (On either android or Xbox One