Pipeline jobs spam the log with the following exception:
- CloudBees Core on modern cloud platforms - Managed Master
- CloudBees Core on traditional platforms - Client Master
- CloudBees Jenkins Enterprise - Managed Master
- CloudBees Jenkins Platform - Client Master
- CloudBees Jenkins Distribution
- Jenkins LTS
- Pipeline: Stage View Plugin < 1.3
The bug is related to the Pipeline: Stage View Plugin.
You have to upgrade this plugin to 1.3 or higher.