No it is well understood if you actually study quantum mechanics. The behavior of a subatomic "thing" is characterized by a wave function. The wave function gives rise to a probability distribution giving the probabilities of the "thing" interacting at various positions in space. The quantity that forms a wave is technically what is know as the probability amplitude - a quantity whose square magnitude gives the probability. That's why the "thing" behaves as a wave. However the "thing" also interacts at precise positions depositing a fixed quantity of energy, so in that sense it behaves as a particle.