INVENTORY - "DUPLICATE AS" Drop down function - Does any one else use it?

Hi
Fo about a year now, we have been unable to use the "duplicate as" function within inventory.

Multiple calls and tickets raised but every time the tech state they cannot reproduce the issue!

I have provided screen video of it.
I have used 2 different account
I have used multiple O/S on PC
I have used multiple O/S on Mac SYSTEMS

All of these do the same and yet ebay tech cannot reproduce the effect!!!

I remember others asking about it so I know I am not the only one with the issue.

Maybe if all who do have the issue can tick the helpful button and post their own issue on here we can get together

Thanks for reading