There is a safe spot near his bedrock nest when he spits his ender acid.
Watch this video at 7:40 and at 8:10
That safe spot makes the whole fight a joke. this is a serious problem that should be fixed.
MC-84245
The ender dragon fight has a "safe spot" exploit when he shoots his acid
Resolved
Fixed
0
This is also a safe spot
[media].
Weird thing is if you take damage of any kind, this will happen:
[media]