Current questions and answers regarding the map editor.

I have no zoom either when casting or when performing a ranged attack. "Moving camera" is enabled

Did you replace an existing hero or create a brand new one?

Your Titan in the screenshot is casting Stone spikes.
Obvious advice: Make only the necessary changes to files such as Titan-arena.(AnimSet).xdb and you will preserve the untouched <animations zoom.

I replaced the hero. I don't think that's the issue.

P.S. The advice is questionable. Your Titan shoots with zoom, even though its attack has been reworked. Maybe if a creature has neither a ranged attack nor a cast from the start, there will be no zoom when you add everything.