I’m also having this issue. Would love to find a solution.
If these lines are going to be merged together into a shape, you can “flatten” the lines and turn it into a single vector and the lines will be centered. Outside of that, I haven’t found another solution.
I found a new solution: just go into point mode (double click the line) and you can align it properly.
Nice! I wonder why it behaves like that? Thanks for considering this problem.
Almost (but not entirely) certain it did not behave this way until recently and is almost certainly a bug with the LINE tool specifically. It is not apparent when applying a stroke to a shape (where inside, outside, and center work as expected).
It’s maddening, and I suspect is related to how they implemented the new variable stroke/drawing stuff.
As an example, I’m trying to make a simple node-connected timeline (see attached) with autolayout. Now this is effectively impossible unless I either flatten each line or make them as rectangles, whereas before I could dynamically modify the design as I go.
To follow up: If you add an arrow or end cap to either end of a line, the center-out width adjustment works. It’s just broken by default until you modify something