Dynamic Tasklist throws ClassCastException on profile page

The dynamic tasklist does currently not work on the profile page. Using it there, causes the following error:

Cause:
java.lang.ClassCastException: com.atlassian.confluence.user.PersonalInformation

Stack Trace: [hide]

java.lang.ClassCastException: com.atlassian.confluence.user.PersonalInformation
at com.atlassian.confluence.pages.persistence.dao.hibernate.HibernateBlogPostDao.getById(HibernateBlogPostDao.java:25)
at com.atlassian.confluence.pages.DefaultPageManager.getAbstractPage(DefaultPageManager.java:98)
at sun.reflect.GeneratedMethodAccessor120.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at com.atlassian.confluence.util.profiling.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:16)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy7.getAbstractPage(Unknown Source)