I wasn't very clear upon reflection about what Quantum Causality and Entanglement was referring to so I did a quick web search and found a 2012 article published from the University of Vienna Quantum causal relations: A causes B causes A
"in quantum mechanics it is possible to conceive situations in which a single event can be both, a cause and an effect of another one."
I have a difficulty with terms such as weird/normal. I find that they are very difficult to operationally define, and if they are not very specifically defined then they have a subjective meaning for each reader. I as the writer have my concepts of normality based upon my life experiences, which will not be the same as the normality of the reader. So, I will respond to the idea of is the Universe full of the unexpected. Absolutely. I think the sciences of humanity, and quantum physics are just at the brink of seeing how much we have learned already has given us a lens to view the staggering and mind bending depths of the unknown universe that is yet to be understood.
Your comments on Causality
Is the Universe weird?