When I create a mandatory single select list with 5 rows of options to select from:

1. If I leave the Size parameter at zero, then the first option only is displayed - I would prefer to see '-Select one-'
2. As a work-around I have to use a size of 5 to display all rows, but this takes up valuable screen space
3. The "Pre-filled default value at registration only:" does not work at all

With a mandatory multi-select list:

1. Even when the Size parameter is set to zero, all 8 rows are displayed
2. This is not a problem with a country field pull down list - perhaps because I have made it optional not mandatory??

Are these bugs?