I found the problem with the Swift Page Builder missing icons. It’s not a plugin conflict.
The Swift Page Builder plugin’s image folder has the icon image for element edit button named as “PB_Element_edit.png” but its css contains “pb_element_edit.png”
This is causing the issue for element edit, delete, clone icons to disappear in the pages and posts. You can see that those links are working properly but the icons are missing.
So the theme developer forgot to update that accordingly. Please have the developer fix this and send us a new version of the Dante theme that will support PHP7.
David