LocName fails to change name of items

With the new syntax changes, the display-Name tag works correctly, but display-LocName no longer works to change the item's name.

This command works:

/give @p stone{display:{Name:"

{\"text\":\"Rock\"}

"}}

However, this command will only give an untampered stone block

/give @p stone{display:{LocName:"

{\"text\":\"Rock\"}

"}}