Without a mac its hard to find the cause of the bug, are you playing on safari ?
Im on google, whenever I click on the lemonade, when it turns into mouse thing, I click on it, then it turns to build. When I right click anything, it turns into this arrow. I just can't seem to create a building/place down assuming that seems to be what is supposed to be happening. Only certain buttons seem to work for me. The only buttons I can use are the sound and start buttons. Everything else doesn't work.