You found a bug! We've classified it as
We encourage you to continue the discussion and to find an acceptable workaround while we work on a permanent fix.
Ext.field.Select: multiple selectfield on one form
I've got a Ext.form.FormPanel with multiple selectfields rendering at once. What I've noticed is when I click to alter the options of any of the selectfields, only the options pop-up for the last selectfield that was created pops up. I'm not doing anything fancy, just rendering selects with "options" array hard coded.