Select2, even after disabling the field the options are selectable

kaustubh.agrawal2000

I am using select2 plugin, although it works well, I have a use case where i should disable option select during edits.
which I am doing like:

    editor.on( 'initEdit', function ( e, json, data ) {
            editor.disable('commodity_id');
            editor.disable('transaction_type');
    });

Here, commodity_id & transaction_type are both select2 fields.. values of which are populated by AJAX.

The fields on the form are shown as GREYED OUT (like disabled).. but I am still able to select the options...

How can I disable that ?

Regards
Kaustubh