When trying to set up a Jenkins Server using Jenkins Configuration as Code Plugin all settings in the "unclassified" Root-Node are not set.

I talked to the maintainers of JCasC about this issue, and they came up with an issue loading the plugin hp-application-automation-tools-plugin.
Even without settings within the plugin the issue is reproducable with the current stable versions (as of June 11th) of Jenkins and JCasC

Jenkins version: 2.346.1
JCasC version:  1464.vd8507b_82e41a_

I set up a githup repository that can be used as reference to reproduce this issue.
https://github.com/addihorn/jcasc-issue

Expected behavior:

• All settings are provided to the Jenkins Server from the JCasC files

Actual behavior:

• Settings in unclassified root Node are not set
• all other settings are provided as defined
• not loading the hp-application-automation-tools-plugin solves this problem and all settings are done properly