Windows 10 Pro
OS Build 18363.1199
Stardock Fences Version 3.09.11
All the fences and all the desktop icons are missing. Double clicking on background did not bring them back.
I checked the fences settings and configured as below:
Fences are enabled. Transparency is mid-range / Translucent fence background is disabled. Disabled desktop pages. Roll-up fences is disabled. Quick-hide is disabled.
Fences remain lost in spite of background double-clicking and rebooting machine.
Task bar flickers when background is double-clicked.
Desktop icons reappear when Fences is disabled and disappear when Fences is re-enabled.
Restored Fences configuration to a previous Layout Snapshot fixed the problem.
I no longer have a problem. I put so much effort into figuring this out and typing it up, I thought someone else may benefit from my efforts. My apologies if this is a duplicate.