I'm using the v3 'apk' on a Quest 2.
I get to the 4th block and the body starts to be assembled. When I put the 5th block on the granite and (accidently) click the assembled block, my hands disappear. As does the horse's body and the legs. I do move quicker but through hills and walls. But I can't do anything from this point.
I've tried it twice.