When using H2 I've no problems with attributes like this:
{{@Id
@GeneratedValue
private UUID id;}}
However, after switching to MySQL, I observed the following:

• The generated column type is BINARY(255)
• The generated WHERE clause for EntityManager.find(Class, UUID) is, e.g.:

WHERE id = '12345678-1234-1234-1234-123456789012' instead of
WHERE id = '12345678123412341234123456789012', i.e. without -

I also tried to replace Hibernate 5.0.7 inside WildFly by 5.1.0 and 5.0.8, but got the same issue.