How to reproduce:

1. Create a job with a long name so and some underscores in it that runs on an executor. and that runs for 1 or 2 minutes
2. start the job
3. Go to the jenkins start page.
4. See the job on the agent where it runs it takes 2 or more lines to display
5. Wait a few seconds until the executor widget is refreshed
6. See that the lines with the job name change and the line break is at a different place
7. Hover over the build number to show the dropdown chevron, the down chevron is wrongly placed