Expected Behavior
I should be able to select and add any field to a service template, even when no check command is selected. This was working before one of the later releases.
Current Behavior

Error: There are no data fields available. Please ask an administrator to create such
Only when a check command is set, the list is usable:

Your Environment
- Director version (System - About): 1.11.0
- Icinga Web 2 version and modules (System - About): 2.12.0
- Operating System and version: CentOS 7
- Webserver, PHP versions: 7.3.33