Hi Aidan,

Thank you for reporting this issue.

We identified and fixed the root cause. The "Drop files here" overlay was getting stuck visible when the drag cursor exited the drop zone quickly. This was caused by two factors:

• The label element inside the drop zone was intercepting drag events, producing spurious browser event sequences that prevented the overlay from hiding.
• In Chromium-based browsers (Chrome, Edge), hiding the overlay triggered a new drag-enter event on the parent element, which immediately re-showed the overlay.

The fix adds pointer-events: none to the drop zone label so it no longer interferes with drag events, and introduces a guard in the JavaScript drag-enter handler to prevent the parent element from re-showing the overlay when the cursor is moving within or out of the upload area.

The fix will be available in the next official 2026 Q2 release, scheduled for May 20.

Regards,
Rumen
Progress Telerik