As I was fighting the Ender Dragon it would swoop down right at the un-opened, built in portal base. Once It got over the base it would get stuck there for about 10 seconds before if flew away. This made it very easy to kill and I don't know whether it's a glitch or not.
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-82853. You can find or add further information on that report.
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