Clojurians Log v2

((m/reduce conj
	   (m/ap
            (let [x (m/?< (m/seed [1 2]))] ; <-- switch
              (let [y (m/?> (m/seed [:a :b]))] ; <-- fork
                [x y])))) prn #(throw %))

Cannot set properties of undefined (setting 'parent')

Is this expected behavior or a bug? (version= cljs + b.46)