The display title field is only set to visible if 'fieldset' is selected. But the pane title is used for containers in the summary of the review step.
see: https://git.drupalcode.org/project/commerce_checkout_order_fields/-/blob...
Setting in the admin backend:
Shows up in the frontend eg: "/checkout/24/review"
Remove the hiding state.
Active
1.0
Code
The change is currently missing an automated test that fails when run with the original code, and succeeds when the bug has been fixed.