Currently there is a logic, that if the field "closed" is checked, so we can discosider the field "active" as we can see in the Drupal Behaviours "ebtAccordion"
if (drupalBlockSettings.closed != undefined && drupalBlockSettings.closed == 1) {
options['active'] = false;
}
And it really makes sense because if the "closed" option is selected we can skip that. So makes sense apply that in the Form API as well using #states. So if the user check the "closed" we can set the "active" as read-only
Update the Form API using the #states with that logic to apply the "read-only" (disabled) when the "closed" checkbox is checked
Fixed
1.4
Code
MR with this implemented at: https://git.drupalcode.org/project/ebt_accordion/-/merge_requests/8