Undergrad Wave-particle duality general question

[LarryS]

I just read the following paper that was written in 2014: https://arxiv.org/abs/1403.4687

It proposes that wave-particle duality and the momentum-position uncertainty (entropic) principle are physically the same phenomena.

The paper was discussed at some length in this forum in the following thread: https://www.physicsforums.com/threads/quantum-mechanics-just-got-less-complicated-really.788438/

One of the main conclusions of the above discussion was that the wave-particle duality was not an important subject because most of the time "quantum objects" behave like neither waves nor particles.

My question: What are some examples of non-relativistic quantum events in which quantum objects behave like neither waves nor particles?

Thanks in advance.

 

[PeterDonis]

What are some examples of non-relativistic quantum events in which quantum objects behave like neither waves nor particles?

Electrons in atoms.