Hi, The title says it all: if the element is set to "Create thumbnails" - Yes "Use Ajax upload" - No The file is uploaded, scaled, the thumb is created and visible in form and list view. But only when the form is is NOT modal (List > Details > Links > Ajaxify links > No). On a modal form, nothing happens. When the thumbs are clicked, the image does NOT open in a pop-up box, but as a normal image (black screen, centered). Tested on Joomla 3.9.16, 3,9.20 and 3.9.21 on 2 different sites, 3 different templates. 1 standard Fabrik installation/updates, 1 updated from Github.