New cats in town

Physicist have devised a variation of the iconic Schrödinger's cat thought experiment that involves several players who understand quantum theory.

See Reflection 1  Quantum theory and thought experiments

But surprisingly using the standard interpretation of quantum mechanics the observers sometimes seem to come to different conclusions about a particular event  suggesting that the interpretation contradicts itself for complex systems.

This raises the question: What is the standard interpretation of QM.

When the two observers open their boxes, in some situations they can conclude with certainty how the coin landed  but the conclusions are different.

What are these specific situations? The article unfortunate does not give any detail about the possible combinations that exist.
