issue with select menu when iam getting options dynamically in alpha 3

issue with select menu when iam getting options dynamically in alpha 3

Hi,

 iam using pure alpha 3  version,In my application, iam getting selectmenu options dynamically from json.
when i click at first time,my select menu is not populating its options..but,it is working when i click Back button
 and move to prev page and again come to same page and if i click selectmenu its populating its data.
can i know why the selectmenu is not populating its data at first click?


Thanks,
Dileep