What happened to the auto button?

I noticed it was gone in arena, fleet arena, and the droid event. But as soon as I pointed it out to my guild in chat, I went and did another battle and it was back. It was pretty weird.

It came backfire me after force closing the game. Gotta use the force.

"Mjm_matt;829841" wrote:
It came backfire me after force closing the game. Gotta use the force.

Gotta use the force correctly so it won't backfire.