Bad Request 400 on synced product save

[kaktus28]

🔎 Isolate the bug

• [X ] I have confirmed this occurs in the most recent version of WordPress, WooCommerce, and Facebook for WooCommerce.
• I have confirmed this occurs when only WooCommerce and Facebook for WooCommerce are active and when using a default WordPress or WooCommerce theme.

✍️ Describe the bug

While editing a product that is synced with meta catalogue, when changing wariants prices or any other variable, saving gives error in console: POST https://my-website.pl/wp-admin/admin-ajax.php 400 (Bad Request).

🚶‍♀️ Steps to reproduce

Wordpress 6.8.3 + Woocommerce 10.3.5 + Facebook for WooCommerce 3.5.14

1. Set a price on a product
2. Sync the product
3. Try editing the price and try to save

1. The first step
2. The next step…

✔️ Expected behavior

Saved data

🗃 Logs

I hanged the domain name in logs.

load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.3:2 POST https://my-website.pl/wp-admin/admin-ajax.php 400 (Bad Request)
send @ load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.3:2
ajax @ load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.3:2
(anonymous) @ load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.3:5
e. @ load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.3:5
save_changes @ meta-boxes-product-variation.min.js?ver=10.3.5:1
save_variations @ meta-boxes-product-variation.min.js?ver=10.3.5:1
dispatch @ load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.3:2
v.handle @ load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.3:2