When you open your section view editor, do you section views look like this?
At first glance you may think that this is controlled by the Edit/View Options or maybe the command settings. However this is simply controlled by the current layer. If your current layer has something like a DASHED linetype, then this is what you will get when launching the Section Editor. Simply change your current layer to something with a CONTINUOUS linetype and the Section Editor will display as expected.