Not sure if it is a bug or an option to be turned on or off. When database is being deployed to a server, it fails with the message that the object already exists (stored procedure). This stored procedure is in both, the original database and the model database on the destination server. So, when the new database is created, the stored procedure is created automatically (from model); then, the Packager tries to create that stored procedure again (from the script).
I know I can de-select the stored procedures when packaging the database, but it is very inconvenient, as I have to do it on many databases. A feature of dropping if exists would be very useful.