I am a beginner with KiCAD …
welcome to the forum, where you will get answers to the questions of life (at least regarding kicad).
As I don’t experience problems in selecting individual hierarchical sheet pins I can only guess:
- some weird grid setting (try to stay with 0,05" or 0,1" grid in the schematic)?
- use of truetype outline fonts (as opposed to the standard kicad stroke font)? The use of custom fonts was a source of different bugs in the past
alternative options to select the wanted hierarchical sheet pin:
- box-select the sheet-pins (draw a rectangular selection box around the pins). In this case use only the left–>right box-selection, otherwise the parent sheet-rectangle is selected together with te pins
- long left mouse button (LMB) click on top of the wanted sheet pin - this hould bring up the disambiguation menu
Read also New Member Information and follow the recommendations until you get promoted to the basic user level. With that user level you are allowed to attach a zipped project (from kicad manager–>File–>archive project) - this allows us to investigate the project and find the problem faster.