I selected the Arduino Pro Min (Rev14) and dropped it on a breadboard.
It resulted in the part being unaligned and not auto-connected.
The part should be properly aligned and auto-connect.
Opening this part in the parts-editor (or looking at the part’s XML file) shows that all pins are declared as female. However, the most common setup with this part is male down facing headers on the long sides and female up facing (or up facing 90 degrees male headers) on the short side. See also similar parts such as Arduino Pro Mini Rev13 and the M1 Blue Pill which do auto-align and auto-connect fine.
I’ve copied this part and after changing all the pins on the long side to male, the customized part connects to the bread board - if and only if I disable ‘Align to grid’. That means something in the part’s definition still messes up the auto-alignment.
- Fedora 35
See also Arduino Pro Mini doesn't align nor connect in fritzing - Arduino Stack Exchange for a discussion and a screenshot of this issue.