Hello,
I noticed recently that when playing as the Mongols, building Mangonels, Trebuchets, and Springalds, did not count for the Daily Challenge called: “Produce: Field Siege - Produce 5 siege engines in the field in a match”. I have not tried reproducing it with Abbasids but I suspect it will be the same.
Game version is 5.0.14681.0
Thanks