Custom Fields Clarification questions

Hi,

I am working with the Shop theme, and have a plugin called WP User Front End.
The topic is custom fields.
Does the Shop Theme consider custom, only the fields it created? Is there a way i can “tag” other fields as custom for the Shop’s perspective?

the background of my question:
There are custom fields created by the Theme (Shop) and there are custom fields created by the WP User Frontend (or any other plugin).

The confusion happens when the content is displayed. Here is a test product i have put together to illustrate the issue: https://www.psocdeveloper.com/product/testing/

If you look at the bulleted list shown in the Description Tab, those are all the custom fields created in WP User Front End. they are retrieved and displayed.
In the Details tab, i have the shortcode [FIELDS], so it is showing only the categories. Nothing else as far as custom fields. So clearly the 2 are not recognizing each other’s custom fields.
Is this expected? Is there a workaround?

I am trying to get the complete list of custom fields to display as my Shop theme shows is in the Details tab, as a clean table.

So how do i make sure the Shop Theme sees the other custom fields i want to display?

Thanks,
Hassane