I have several fences on my desktop. I moved one to a second monitor recently. Today, I unhooked the monitor (to work remotely) and when I added it back, the fence disappeared. All fences disappeared actually. I restarted my laptop and they all came back, except for the fence I had on the second monitor. The files are still there if I look at my desktop folder, but I can't seem to figure out how to restore the fence.