Why are the product options shown twice in the order view?

If your product config adds additional charges with the Checkout extensibility mode set to bundle, the Shopify order view can show the selected options twice: once on the main line item, and again in a "Part of..." block on the child items, where the raw _cl_options and _cl_options_json properties are also visible.
Why this happens
This is a change on Shopify's side, not in the app. Shopify updated the layout of the order view so that products which are part of a bundle now repeat all of the parent's line item properties on every child item. Shopify has confirmed that this behaviour is permanent.
The app copies the option properties onto the child line items on purposeso that apps reading the order (order exports, fulfilment apps, Zapier, print providers) find the personalization data on the item they are processing.
How to stop the duplication

Open the app and go to Settings > Checkout settings, then disable Copy Product Options.
New orders will then show the options only on the first part of the bundle. Orders that were already placed will always keep the duplicated blocks, because the setting is not retroactive.
Before you disable it
- Keep it enabled if you use any integration that reads line item properties, such as Zapier, order-sync apps, order exports, fulfilment or print-on-demand apps. Those integrations read the child line item, and with the copying disabled the personalization data is no longer there.
- The options are also removed from Shopify's order confirmation email for the child items.
- If you only want the order view to be easier to read, note that the duplicated child options can now be collapsed in the Shopify order view without changing any setting.