After registration, go to your profile and edit it. For example, you have in select 3 options, choose second option. Save profile. Edit again. You will see that 1 option is selected (must be second). It can confuse user, because he can think that save option is not working. This is only in Firefox
Check registration page with enabled select field in Xprofiles. Also, the same is in edit page in profile.
Problem that in Firefox, all selects ignore selected=”selected” and shows default first option in select. You can fix this with adding autocomplete=”off”
