I was attempting to edit a shapefile layer in QGIS. I used the "create line tool" and started to sketch out a shape. I didn't like how it was turning out and tried to cancel it by pressing "escape" the line was left in place and now I can't delete it. It can't be selected with the vertex tool and especially strangely doesn't appear to be part of any layer. I can literally deselect every layer of my project and the line is still there. Also this happens every time I use the "create line tool".
Please help.