reproducible error with Nexi checkout payment

Hi,
under certain circumstances, “Fluid Checkout” and “Nexi Checkout” lead to a completely broken layout of the checkout page. This broken layout will persist until the cache and cookie are cleared and the browser is restarted.

The debug.log shows no errors.
There are several warnings in the console (see screenshot)

active plugins:

Woocommerce (v9.7.1 and up)
Fluid Checkout for WooCommerce – Lite (v4.0.5)
Nexi Checkout (v2.10.4) – Redirect Mode

Theme: Kadence (v1.2.24)

all other plugins were deactivated for testing

steps to reproduce:
there are at least two ways to reproduce

1.)

• put something in the cart and go to the checkout page
• fill in the required fields and select nexi payment method
• press order button
• after redirect on the nexi page
• press back (link at the bottom of the page)
• Result: broken checkout page layout, it appears as if fluid is no longer functional

2.) does not always work the first time

• put something in the cart and go to the checkout page
• fill in the required fields
• don’t check the terms
• press order button
• go back to the cart
• go to the checkout again
• Result: broken checkout page layout, it appears as if fluid is no longer functional

Screenshot:
https://ibb.co/WvswBK9w