Toggle of payment card is broken with coupon application/removal when extra order fields enabled

Problem/Motivation

When enabling the module, and using coupons, the credit card information fields don't toggle properly. When I disable the extra fields, the coupon behavior works properly.

Futher information: If the custom order fields are placed on the "order information" or "sidebar" panes, the coupon application misbehaves.

1. On first page load, clicking the coupon apply/remove doesn't toggle the payment information.
2. Subsequent clicks toggles the payment information, but it is "out of step" with what should be done
   • Removing the coupons to get a non-zero balance hides the payment card info
   • Adding a coupon to get a zero balance displays the payment card info

Modules used: Commerce Braintree, Commerce Webform Order

Steps to reproduce

1. Enable the module
2. Add custom field of type text(plain): /admin/commerce/config/order-types/default/edit/fields
3. Enable order field display: /admin/commerce/config/order-types/default/edit/display
4. Add custom field to the checkout flow: /admin/commerce/config/checkout-flows/manage/default

If the field is disabled from the checkout flow the proper coupon behavior is restored.

Things I tried

• Changing to stock theme
• Changing the wrapper element (container vs fieldset)
• Changing the location on the checkout flow