Ender Dragon doesn't face intended direction when using /summon

Me and my friend wanted to make a Ender Dragon project, and I tried to summon a Dragon facing south. I used the rotation tag

{Rotation:[0.0f,0.0f],NoAI:1b}

And when it summoned, it had no AI as intended but it faced north instead of south. I tried this many times and it did not work. I saw a Reddit post with someone experiencing the same issue, and they didn't have a solution, and the comments didn't either.

Reddit Post: https://www.reddit.com/r/MinecraftCommands/comments/ipchq1/comment/g4ko6mj/

Expected Behavior: Should face south/any other direction chosen

Observed Behavior: Only faces North

How to reproduce: /summon ender_dragon ~ ~ ~

{Rotation:[0.0f,0.0f],NoAI:1b}