No, Testlund, that is not enough. I don't have stuff falling down. And default settings did not cause this. So, this is something that you did that made it so. We need to know what before it can be fixed. Start with default settings, change one setting at a time and record when the bug appears. It is so easy, why can't you do it?
My personal guess is that he turned on pond mode, fiddled with settings, then turned pondmode off, but the gravity settings is not changed for some reason. But that, of course, is pure speculation. We need to know exactly what happened.