Hi @creativelogic
Interesting… the ‘destory’ Select2 JS issue should definitely be fixed. The issue was not due to the Select2 library, it was a helper function in the acf JS object.
It’s possible that I’ve missed something, are you able to create a new support ticket and include the .json field group to replicate the issue?
http://support.advancedcustomfields.com/new-ticket/
Thanks
E