SQL Developer 3.2.20.09 - Database Export generating an unusable file

Question

I am using the Database Export option in the tools menu to create a script to create schema objects. Unfortunately, the output of the script is not very usable. There seem to be extra '/' throughout the script. Here is a sample:
-- DDL for Sequence ADDL_INFO_GROUP_SEQ
CREATE SEQUENCE "ADDL_INFO_GROUP_SEQ" MINVALUE 1 MAXVALUE 2147483647 INCREMENT BY 1 START WITH 1 CACHE 1000 NOORDER CYCLE ;
-- DDL for Sequence ADDL_INFO_NAME_LANG_SEQ
CREATE SEQUENCE "ADDL_INFO_NAME_LANG_SEQ" MINVALUE 1 MAXVALUE 2147483647 INCREMENT BY 1 START WITH 1 CACHE 1000 NOORDER CYCLE ;
-- DDL for Sequence ADDL_INFO_VALUE_SEQ
CREATE SEQUENCE "ADDL_INFO_VALUE_SEQ" MINVALUE 1 MAXVALUE 2147483647 INCREMENT BY 1 START WITH 1 CACHE 1000 NOORDER CYCLE ;
-- DDL for Sequence ATTACHMENT_GROUP_SEQ
CREATE SEQUENCE "ATTACHMENT_GROUP_SEQ" MINVALUE 1 MAXVALUE 2147483647 INCREMENT BY 1 START WITH 1 CACHE 1000 NOORDER CYCLE ;
Obviously, having both the ';' at the end of the statement and the '/' on the following line will cause an error when the script is executed.
Has anyone else seen this kind of behavior?

Answer 1

In SQLPlus, this script will attempt to create everything twice, resulting in
ORA-00955: name is already used by an existing objectfor each line.
If SQL Developer doesn't do this then its SQLPlus compatability is broken.
This is messy and undesirable for DDL statements, but will definitely result in the wrong behaviour if there are insert statements.