Transition tower is huge in preview, affecting part arrangement

This is what my transition tower looks like when I’m arranging parts:

This is what it looks like when I slice the project:

The huge size of the transition tower doesn’t change if I change the length in Settings. It’s so big, it’s causing parts to be arranged in a less than optimal arrangement, and often places parts off the side of the bed by reserving such a huge and unnecessary area for the transition tower.

Is there any way to change how much space is reserved for the transition tower? This wasn’t a problem with earlier versions of Canvas3d.io.