Double buildings in superflat, and half buildings on top of some buildings without nearby abandoned mineshaft: How do you upload pics on mac?

Sorry, I don't know how to get screenshots on Mac so sorry, no screenshots.
However when I find out I will have them on.
When a village is spawned on superflat mode, generated structures and cheats on. (The seed will be coming.) Find you nearest village and look around it. You have a low chance of finding it without an abandoned mineshaft there. If you do find it please confirm it. When screenshots and seeds come, you will be able to see it better.
Seed came out : -9060150656451965008