Problem editing custom fields in product page backend

-- HikaShop version -- : 6.6.0
-- Joomla version -- : 5.4.6
-- PHP version -- : 8.2
-- Browser(s) name and version -- : Firefox

Hello,

I’ve added custom fields to my product’s pages templates in the view files. When I go to the product page in the backend and want to edit the custom fields, most of the time, it’s not possible as it looks like the page is still charging, only for these specific fields. So, lately, it is very rarely possible to edit these fields. The rest of the product page, like for example the description, appear properly and I can edit it.

Do you know what may be causing this problem and how to fix it ?

Thank you !