Validation-failing fields that are not in the current vertical tab block submit but produce zero feedback

Fields that are not in the current vertical tab when Submit is pressed and that fail validation cause submission to silently fail: Nothing happens, no feedback to the service provider at all

Searched for:

There’s this lonely core issue with patch: Correct vertical tab does not focus on form validation [#2911932] |

It seems to be accepted as a Field Group issue though: Ensure visibility of invalid fields (JS)

Related, HTML5 Validation Prevents Submission in Tabs [#2969051] |

Some think this is fixed? Highlight vertical tabs when they have elements with errors [#607752] |

Going to try to work around it with