The stop button on the event tab disappears unintentionally

[yoshwata]

What happened:

In a pipeline with multiple builds running, the stop button on the event tab disappears when a particular build is aborted.

first, stop exists:

abort, and stop disapper:

Then when a new build starts working, the stop button will reappear.

What you expected to happen:

If there is even one running build, the event will continue to display the stop button.

How to reproduce it:

After starting the following pipeline, abort the main job. https://cd.screwdriver.cd/pipelines/5809/events/674660

[jithine]

Is the issue that UI is computing incorrect event status ? Running should take precedence over aborted.

cc @adong