I've a problem with texts and tables. When I insert a box text in my page, I can't control the text: I can't control the line-spacing and the mooring with the box. For tables is the same: when I insert a table into the page, boxes change dimension and I can't control it.
But if I insert my box text and my table out of my page, I've not this problem.
Or you may have align to grid or snap to grid enabled by default.