I have simmilar problem. After update WP to 5.1.1 and WooCommerce to 3.5.7 and ACF free to ACF pro, my custom fields had values. On the frontend WYSIWYG fields are cropped (one or few chars), after first save of the product, the content of the custom fields dissapears. New content inserted into CF’s doesn’t save…
Could you please help me with this case?
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