Savana Axel

I have tried to build a club and i noticed i can only make it so big. it will not go over 64.00000 why is that? i thought i could make it as big as i wanted. I have check other sandboxs and same results. I used to be able to make nice size building. now it will not let me. Can someone let me know what "if" iam doing wrong or did linden labs bring down the areas to work in. Thank you