Fireworks rockets are not shown in creative inventory.

As you see in my attachment, I searched for items with tag "rocket." All was shown is a firework star.

"rocket and firework"

that's because it caused a lot of confusion among players. it was removed by jeb and dinnerbone on purpose. not a bug!

I did not say it was a bug. Just a suggestion/issue that should be improved.

you posted it on a bug tracker. this post was marked as a bug. if you want to make a suggestion, go to reddit, twitter.com/jeb_, twitter.com/dinnerbone or the minecraftforums