We recently upgraded to Jenkins 2.277.3.  I do not know the prior version.  After the upgrade, the job names we set typically only show up to 10 characters in the Build History window in left pane of webpage.  The rest of the job name is overlaid by the date and time of the job.  Some of our jobs show the date/time on a 2nd line in which case we do see the full name.  But most of our jobs (both pipeline and non-pipeline) do not display the full job name that we set.   See attachments.  Prior to the Jenkins upgrade, we always saw the full job name in the Build History window.