A functional test for Tasks example does not work correctly

Running the test yields the following error:

Error Message

There should be a 'Resolve this task' button for: Buy a turtle and take it to work. expected:<true> but was:<false>

Stacktrace

java.lang.AssertionError: There should be a 'Resolve this task' button for: Buy a turtle and take it to work. expected:<true> but was:<false>
at org.jboss.seam.example.tasks.test.selenium.SeleniumTasksTest.buttonPresent(SeleniumTasksTest.java:240)
at org.jboss.seam.example.tasks.test.selenium.SeleniumTasksTest.editTurtleTask(SeleniumTasksTest.java:130)
... Removed 25 stack frames

However, I tried the example manually and the new task really appears in the "Work" category after editing. So the example on its own works fine.