Is there a way in Pro to adjust where a balloon text graphic's dart/leader hits the label? I can change where it points with ease, but I can't find a way to modify where the width of it hits the label.
If this is just a graphic in a layout, you should be able to move the callout around to make the leader adjust. You may also need to change up some of the margins left , right, top, bottom, to make it look appropriate.
Can you move the stem? The stem location will change when you move the callout box. Try moving it closer to the point of the dart, then move left to right.
No, you can move where the leader points and the callout, but it decides how to draw the stem. Seems to switch from a left side and a right side position based on proximity with no further options for adjustment. It looks like I'll need to pop it into Illustrator.
Yes, I saw that when I tested it. I know that if you have a feature class and you create labels with callout balloons then convert the labels to annotation, there is a way to edit the annotation vertices and you can control the stem much easier.
at this point there isn't fine grained control over how the callout attaches to the label. This would be something good to create a post for over in ArcGIS ideas.
Right now you can control the width of the dart and if it is fixed or not.