The calculated disk usage for multibranch pipelines seems to miss the size of the workspace directory.
The plugin claims 3891kB for the job:
But "du" says 1.4G for the workspace directory.
Situation should be improved by the new JENKINS_FS improvement introduced by https://github.com/jenkinsci/cloudbees-disk-usage-simple-plugin/releases/tag/176.v4fdfcc443b_cf
Situation should be improved by the new JENKINS_FS improvement introduced by https://github.com/jenkinsci/cloudbees-disk-usage-simple-plugin/releases/tag/176.v4fdfcc443b_cf