For example, the jolly ranchers are missing.

Certain items aren't in the creative menu on purpose because they're not finished, or are easter egg items, like the Jolly Ranchers.

Ah, okay.

In case you're curious, the Jolly Ranchers are a reference to the review of the mod Yogscast did way back in the day.

I thought that it had something to do with an upcoming lean implementation or sth like that.