Steps to reproduce:
- Install a cluster via Ambari UI
- In the "Customize Services" step open the "All Configurations" tab and view the main configuration page for a service. I checked it with HDFS and HIVE.
- Continue installing the cluster.
- When done, select the service of which you viewed the configs during installation and check the configs.
- Configuration page will be corrupt. See screenshots below. It will go back to normal after reloading Ambari UI in the browser.