LGD date validation messages not using custom wording

[DavidBAsch]

As a content designer using the LGD Date and LGD Date of birth elements in Drupal forms
I need to be able to set the wording for validation messages
So that the messages are clear, accessible and match the rest of the style pattern

The custom validation text options for LGD date and LGD date of birth fields do not alter the displayed message. This often results in duplicated words and, for some reason, it italicises the field name, which does not happen anywhere else.

See examples: