There are A LOT of posts about automatic dimensions, only a handful about using the newer Dimension.ByElements node, but most of them are out-dated.
I used a very simple script with my testing model, only nine column lines, and there seems to be a bug.
The script will pull the column lines and place a zero dimension on each one. It is only when I try to drag them (usually takes two attempts) that the actual grid-to-grid dimension show up. I am only running this script on a floor plan view, the image below happens to show a 3rd level view.
Is this a flaw or do I need to add something?