Issue
When field_group module accordions are added to entity edit forms they look and behave differently from accordions in the sidebar:
Same issue for Seven theme:
https://www.drupal.org/project/drupal/issues/3023339 →
Solution
Replicate look and behavior of accordions in sidebar for accordions added to edit forms using Field Group module or any other module that provides accordions using JQuery UI in core.
Closed: won't fix
9.5
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
Closing this issue as we removed jQuery UI from core.
If there is a dependency missing, field_group should declare it. Also field_group is using outdated markup which would need to be migrated so these issues would disappear.
Linking some related field_group issues.