Logic -Dragged questions for Display Condition not appearing in the space provided

Hi everyone. I am trying to effect logic for a form to set up display condition and when I drag a questions into the space labeled "Drag question here", the dragged question does not appear in the space and all it still see in that space is "Drag question here". I observed that the green tick which usually appears while the question is being dragged does not appear also. What am I doing wrong? Can someone please advise? Thanks.

This sounds like it might be a bug, can you try Reporting an Issue through the HQ interface so someone can take a look?