When inputting , users can paste into dropdowns not populated by code table values. System admins can paste into code table populated dropdowns.
We are currently evaluating this issue and will update this article when we have more information.
Steps to Duplicate
Create a user with every system permission available to them. Open any form with code table dropdowns for example "add an address"
open a constituent record
choose contact tab
under address choose add
You can paste into Country , Province , Old address as these are not code table populated. Type,Reason and Information Source can only be pasted into if system admin as this offers the pasted value to be added as a new entry in the respective code table.