Creating content with blueprint content draft behind, causes a ClassCastException

When canceling creation of a page when there is a meeting notes draft present, a ClassCastException is thrown:

How to reproduce:
1. Click Create -> Meeting notes
2. In the opened editor page, click Create (it just redirect to a page creation)
3. Click cancel.

Result: a shown error with the stack trace:

java.lang.ClassCastException: com.atlassian.confluence.pages.Draft cannot be cast to com.atlassian.confluence.pages.AbstractPage
    at com.atlassian.confluence.pages.persistence.dao.hibernate.HibernateAbstractPageDao.getAbstractPageById(HibernateAbstractPageDao.java:18)