At Start Stack shows 1st unit in title

Vassal 3.7.15 WIN64

I noticed today that the At Start Stack container is now showing the name of the first unit contained in the stack in the editor.
Example: At Start Stack name “Belgium”, shows up as
image

If this wasn’t a deliberate change (I suspect not), this shouldn’t be occuring. Note that the documentation does not mention this behavior and the documentation images imply it shouldn’t be happening.

Is this a behavior change? If so, what’s the first version where this behavior occurs?

I went back to 3.7.0 and it was showing up even that far back.

So it looks like this has been the default behavior for awhile and the documentation may just be out of synch.