Spawn by falling sky damage

So I opened and play a world when I enter a world this what happens I spawn always in the sky and fall and die,I didn't do creative and go to the air and die no. People think its a joke but no its true when I spawn my survival world I spawn all the way to the sky I though the world its generating but no I fall all the way down with a big lag.please mojang please fix this bug here its a screenshot when I die I think its only for beta on androids.