I have a model in data modeler which has a default value of 'N', but the generated DDL to sync this to the existing data dictionary/database keeps saying to set the default value to 'Y'. SQL Developer 4.1.3.20.

After manually updating the table in the database to have the correct default of 'N', and re-running the sync, I get a difference in the "physical details" section which was not there before:

Can anyone explain what's going on, or is this a bug?