Or, you can use your Fences saved layout snapshot restore function. But, interesting to see on how you drag it to under the taskbar? Usually, it will snap to your taskbar if it get close enough to the taskbar. And only move further down, if you kind like press it down further.

Thank you,

Basj,
Stardock Community Assistant

Could you post a video of your issue. For me, drag the fence beyond the task bar is difficult since it will snap to the taskbar top when you get close enough to the taskbar. So moving it under the taskbar is difficult, unless you intentionally want it to move beyond the snapping point.

I posted a video from what I see when dragging Fences down. As you can see from the video. The dragged Fences will first snap itself to the taskbar when it come close with it. It won't move further down, unless you keep dragging down.

Thank you,

Basj,
Stardock Community Assistant