In one of our instances, random (at least it seems random) jobs are not being displayed in the build history section:
In /var/jenkins/home we can see that the build folder was created for #751, but it contains less files than one that shows up in the interface:
This is what we can see (confidential data removed, of course):
versus a build that is visible in the interface:
Why could the build #751 not show up in the interface?