See attached screen shot, that step should be in completed (green) state.

to reproduce:

• Setup github multibranch project for kzantow/failure-project.
• Let it discover branches
• Go to branches tab for pipeline
• Run "passing" branch and open it (karaoke mode), let it complete
• Click on the penultimate stage, note that the step is "blue"

Sometimes when dismissing the modal, a blank summary screen can be seen as well.

Let me know if you can't reproduce