Thank you for reporting the issue to us.
We have fixed the issue in the latest version of InDesign, Id 15.0
Please upgrade your InDesign application to the latest version to try out the fix.
If you face any problems with the new update, do let us know in the comments.
You may also follow the below given link for the list of all fixed issues in Id 15.0
An error occurred while saving the commentFr Innocent commented
I agree that having to press Alt BEFORE selecting the object is totally counterintuitive. PLEASE change back to the way it was ie: you can press Alt at any time while dragging an object.
I'm here on this forum precisely because I just had this problem for the umteenth time, losing time having to step back and do the duplicate an object the new way. What a waste of time!!!!!!!