Order emails and checkout page display attribute term slugs instead of their names

Overview of the issue

When a product variation is checked out, its attribute term slugs display on the following page and emails:

• Order details page.
• Thank you for your order email (to the client)
• New customer order email (to the web owners)

Their names should be displayed instead. For example, they should display Green color rather than green-color.

Workaround

The fix for this issue is ready and will be included in the upcoming release.

Since the fix is complicated, we do not have any workaround at the moment.