If you have both vertical and horizontal tabs on the same page, the 'required' functionality will not work since modules/contrib/field_group/formatters/tabs/tabs.js is only called with whichever happens first: horizontal or vertical
This is because 'tabs' is considered the 'format type' rather than separation between the two tab types. This means the settings passed will either be 'horizontal' or 'vertical', not both.
Process both horizontal and vertical tabs if existing
Refactor the code to allow for this
All field groups with required fields are highlighted as required even if there is a mix of horizontal and vertical tabs.
N/A
N/A
Active
4.0
Code
Tests pass fine once 🐛 Drupal 10.4 RC1 error with field_ui.js Active is merged (applied manually locally and ran tests).
Phpcs, cspell, and eslint are all existing warnings. Probably best not to scope creep and fix here, so leaving as is.