Has this been fixed yet? I'm going to try downgrading back to 3 and see if that works. Very frustrating turning on my computer everyday and having to drag a dozen fences to the correct monitor. Still not sure what I paid for when I upgraded.
I'm on 184.108.40.206 and Windows 10 and can confirm that the issue is present here too, so don't bother. I've stopped caring about the new features Fences offers because this issue is so frustrating.
I have a relatively simple setup with 2 monitors and 3 fences on a single monitor, and whenever the problem shows up, 2 of them disappear completely and the third moves to another spot (the same one consistently) on the same monitor every time.
It's hard to troubleshoot this because as mentioned by another person, the issue doesn't arise consistently. I can go a week with rebooting and the fences appear normally, and then have a few days straight where my fences are broken. If two thirds of my desktop icons are potentially missing on each startup, it's hard to rely on Fences as a product, let alone justify the upgrade cost, nominal as it may be.