A new (or possibly old) bug has appeared with DF and the taskbar on my secondary monitor.

After using RDP to remote my PC, when disconnected and I unlocked the PC, the secondary monitor had two DF taskbars.

After I had someone else logon to my PC using Switch User when I was logged in, then logoff, and I unlocked the PC, I had two DF taskbars on the secondary monitor.

In both cases, disabling and enabling Taskbars reduced my secondary monitor to one taskbar.