I'm experiencing a problem with the way QGIS Essen 2.14.12 draws a marker line symbol at the end of a polyline. It only occurs sometimes, and sometimes moving (even slightly) the mapping within the window will make the "orphan" symbol disappear, or make it reappear. Zooming in/out will also have the same seemingly random effect. I hope the attached image shows the problem - note the floating V at the top end of the brown line.
The offending V is an inverted V symbol and offset by 8mm relative to the non-offset symbol (which plays nice and behaves itself) see settings below.
Despite searching, I've not found an answer to this issue.