A couple of methods being used to dupe items.
- Legacy ID
- No Bug
I will include repro steps in private post below.
Thank you for your report!
The first option - this is a byproduct of the current implementation of server restarts and persistence, which we are aware of, however tweaking it may take some time and this I am going to close the ticket for now - please be patient.
We will take a look into the second one.