In "Drag and Drop" content, the text of a dragged element disappears completely once dropped into a drop zone—it’s not just visually hidden; the content actually appears empty (verified with Ctrl+A; no selection is possible there).
Steps to reproduce:
Create a new "Drag and Drop" content type with at least one text element and a drop zone
Drag the element into the drop zone
Notice that the text has disappeared, even though it was clearly visible before being dropped
Reproducible: Yes, even in a minimal test with only 2 elements
Browser: Chrome
