Thank you for trying it out!!
The duplication mechanic was a bit finicky even when I was developing it. Unfortunately due to limited time, I couldn't really iron out those issues, I just went with "it works for now"
As for indicating whether an object is interactable or not, I could use stencils to outline the objects when the player hovers over them like the original game. For the time being I went for the crosshair increasing in size and becoming solid white when hovering over an interactable, but the stencil should be easy to implement.
Thanks for the feedback I appreciate it!
I wish you all the best