When using the version number plugin in a multiconfiguration job, the customized build name is only visible in the configuration axis jobs.

Example:

MyJob -- Axis1
      -- Axis2
      -- Axis3

Let's say we use a build name pattern like this: SOMESTRING-${BUILD_NAME}-#${BUILD_NUMBER}
After a succesful build the result will be:

MyJob -- Axis1 (SOMESTRING-MyJob-#1) 
      -- Axis2 (SOMESTRING-MyJob-#1) 
      -- Axis3 (SOMESTRING-MyJob-#1)

The expected behavior would be something like this:

MyJob (SOMESTRING-MyJob-#1) -- Axis1 (SOMESTRING-MyJob-#1) 
                            -- Axis2 (SOMESTRING-MyJob-#1) 
                            -- Axis3 (SOMESTRING-MyJob-#1)

Steps to reproduce:

• Create a new multiconfiguration job.
• Add some axis.
• In the job configuration, tick the "Create a formatted version number" checkbox.
• Fill any pattern in the "Version Number Format String" box.
• Tick the "Use the formatted version number for build display name." checkbox.
• Start a build.
• The custom build name will only be visible in a specific axis and not on the main job page.