Hi Nicholas,
It looks like since we upgraded to 3.2 the issue with not being able to reselect the year once you have already selected it has disappeared, though that could have also been a cache issue because right at the same time I upgraded my browser and that problem is not reproducible as of today. However, the missing October is still an issue.
To reproduce this, create a new field in display / new field called DOB. Set up the new field using the Advanced Date Picker and configure it per screenshots.
Use the Test Calendar, edit hikashop / User, or use the new user registration form and select the DOB field opening the calendar and you will see in all places that October is missing from the choices.
The important thing is to set the dates to only show past dates, and set the start year to 1920 and end year 1999.
This should be easily reproducible. If you need any other information, please let me know exactly what you need and I will provide it.
The screenshots should be in the order in which this was configured / tested. ie 1. Create New Field, 2. Configure, 3. Test in the configuration using example calendar, 4. Test HikaShop User Editor, 5, Test New User Registration (using the Joomla to Hikshop user registration plugin.
Thanks!