Trying to draw a trace from one pin to another, same net, but it will not complete. It resists attaching, giving "sketch must end near end of guide" in the output window. Ctrl+click and selecting complete from the right-click drop-down menu do not work. These two pins are encompassed in a net plane. When the plane has been flooded, thermals show up, but a trace won't route. When, the plane has not been flooded, it routes just fine. What's going on here?