Woocommerce Image Settings Not Saving In Customizer

Hi Roberto,

how strange... in your dashboard > Settings > Media - what happens if you set the media sizes ? Currently they are all 0

Yes, they work as expected in the media settings :-(

Sorry what i meant was... if you update the media settings to have values.
Then do the Customizer settings work ?

Nope, even when the media settings works, the issue persist in the customizer.

Does the same issue happen if you activate a Twenty series WP theme to test?

That panel (Customizer > WooCommerce) is a coming from WooCommerce itself so I don't believe the theme is the issue here:
https://woocommerce.com/document/woocommerce-customizer/

Ok @Leo, @ David. I've found what was causing the issue (after 3 days and by mistake).
It was a conflict with this plugin Variation Swatches for WooCommerce By Emran Ahmed

Which is, by the way, one of the most loved features of this client :-)

Thanks as always.

The plugin's support staff replied with this:

--

Please put the below code as a snippet (using Code Snippet Plugin) or paste the below code inside your child theme's functions.php

if ( ! function_exists( 'wvs_support' ) ) {

  function wvs_support(){
    remove_filter( 'pre_update_option_woocommerce_thumbnail_image_width', 'wvs_clear_transient' );
    remove_filter( 'pre_update_option_woocommerce_thumbnail_cropping', 'wvs_clear_transient' );
  }

  add_action('admin_init', 'wvs_support');
}

And now the issue is gone :-)

Glad to hear you found the cause of the issue - and thanks for sharing their solution.