JHS Powerbar / Pixero problem - BOTH objects moving

Let’s say I have this situation:

I used the Pixero “Align On Red” command:

What I would like is for Object 2 to move WITHOUT moving Object 1.

What’s really weird is that when Object 1 is much larger than Object 2, it works as expected.

Before:

After:

What am I doing wrong, and how can I have an extension that behaves like the last example? (Similar to the CorelDRAW / Illustrator mentality of aligning objects to the last object selected, but the last object is not moving).