Fiddle displaying behaviour: http://jsfiddle.net/harhoo/9k7o9per/6

At this point, after seeing all of the tickets, this is definitely a bug.

I'm also encountering similar issue.

+1

This should have been fixed by d1ed0a5.

Hello, this fix seems to just be the failing test -- I am still experiencing the issue in 4.0.6, did I miss something? I am adding an initial option tag with a select that uses ajax. Thank you!

for me,
issue reproduces also for setting the data from ajax:
{
"results": [
{
"id": 1,
"text": "Option 1"
},
{
"id": 2,
"text": "Option 2",
"selected": true
}
]
}
the selected option is not shown as selected.

Any idea what i could do ?
Thank you.

A very simple way to tackle this problem is :

//Step1: Here assuming id of your selectbox is my_id, so this will add selected attribute to 1st option $('#my_id option').eq(0).prop('selected',true);

//Step2: Now reinitialize your select box

//This will work, if you haven't initialized selectbox $('#my_id').select2();

or

//This will work, if you have initialized selectbox earlier, so destroy it first and initialise it $('#my_id').select2('destroy').select2();