Text box not working in any dashboard

We cannot add text boxes to any of our dashboards. What I am doing is:

  1. open any dashboard
  2. click Edit
  3. click Add textbox
  4. fill in text and click “Add to dashboard”
    in the last step, when clicking “add to dashboard”, nothing happens. It just keeps thinking. This happens to everyone in my company, preventing us from adding text. We are currently using some ugly workarounds, but would be great if this feature would have worked. Is this something that can be fixed?