1/ Create a schema on MySQL called: myschema.domain
2/ Create a JPA project
3/ Create an entity called myEntity
4/ Create The corresponding Table (via generated script)
5/ Configure Data Source Explorer to the connection => This works well
6/ Configure Hibernate explorer (using above connection)
7/ Try to open the Database part of this view => you get an SQL exception:

org.hibernate.exception.SQLGrammarException: Could not get list of suggested identity strategies from database. Probably a JDBC driver problem.
(...)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.DOMAIN like 'myentity'' at line 1
(...)

Hint:
I just checked the SQL query (via MySQL proxy) and it lacks `` around the schema name in one query:
show table status from MYSCHEMA.DOMAIN like 'myentity'

Just replace dot by underscore and everything works well.