**Preconditions**

- Firefox 24 used.
- Work package module activated.
- Work packages exist.
- Cache has been deleted to make sure this is not only a temporary problem.

**Steps to reproduce**

1. Go to work package table.
2. Hover over work package table header.

**Actual behavior**

- Hover is broken.

**Expected behavior**

- Hover is correct.

**Screenshots**

**QA system**

- Firefox 24
- enterprise-dev.qa.finn.de
- openproject-org.qa.finn.de
- OpenProject 4.0.0 Begin of the deletion
End of the deletion