There was no photon to begin with

Fortunately, there are a wealth of interpretations of quantum mechanics, and almost all of them have to do with what happens to the wave function upon measurement. Take a particle’s position. Before measurement, we can only talk in terms of the probabilities of, say, finding the particle somewhere. Upon measurement, the particle assumes a definite location. In the Copenhagen interpretation, measurement causes the wave function to collapse, and we cannot talk of properties, such as a particle’s position, before collapse. Some physicists view the Copenhagen interpretation as an argument that properties are not real until measured.

In physics, as everything else, the perturbed system requantizes and the observer sees a particle that never existed.

This is about a new thought experiment on quantum physics.  The vacuum does not have a definition of particle boundaries, strictly a human thing. In the thought experiment, two experimenters,  one sending a photon  will collapse the communications channel a lot, the expimenter is creating a photon out of thin vacuum perturbations. That collapse is further interfered with by the observer.

They both should know this, and both should report communications channel uncertainty as a possible response. Think of it an an overloaded, fixed bandwidth channel.   It has to carry one physicists effect on creating the particle and another's effect on measuring it.  The channel runs out of bandwith and is incapable of identifying particles at all.

The problem is trying to get everyone to agree on something that never existed, the particle.  The effect does not show up with large sustained perturbations of the vacuum, like a big rock.