Control Panel cannot remove the first item in a list

• Type: Bug
• Status: Verified
• Resolution: Unresolved
• Affects Version/s: 7.0.5 CE GA6, 7.0.X, 7.1.X, 7.2.X, 7.3.X, Master
• Fix Version/s: None
• Component/s: Portal Configuration > System Settings
• Labels:
  • usm_73_reproducible
• Fix Priority: 2

Open user interface: Control Panel > System Settings > Foundation > FreeMarker Engine.

This interface has 2 variables, "Restricted classes" and "Restricted variables", that are list of values. There is no UI control to remove the first item in the list. Unlike item number 2 and higher, the only way to remove the first item is to make it empty using [Backspace] to delete its value. The side effect is that you end up with the value of "Restricted classes" as:

[, java.lang.ClassLoader, java.lang.Thread]

where the first value is empty instead of the more reasonable value of:

[java.lang.ClassLoader, java.lang.Thread]

The implementation of this UI is incomplete.