When I select an object, it is highlighted in the objects panel, but if I select the duplicate of the object, it is not highlighted.
Any suggestions ?
Try saving after you create the duplicate.
Strange it ought to be visible and highlighted in Objects docker.What does the Status Bar say when you select the original object versus the duplicate?It should give you an indication what kind of object you have selected, whether it is in a group or not, and on which layer it is.Maybe you can locate it that way?
I'm so sorry.
I don't read the forum frequently, and only today I saw your kind response.
I don't know why but now the problem no longer occurs.
Corel Mysteries :)