I've figured it out, at least for my environment. Its the Nvidia GeForce Experience software. Stop the services, reboot, and the problem doesn't come back. So, some sort of weird interop bug due to the software always having hotkey-activated overlay going.
Window 11 taskbar auto-hide turning off
I switched to Windows 11 a few weeks ago, and ever since then, the taskbar auto-hide quits working when the computer comes out of Sleep mode. I have to be away from the computer for a while before it will happen, and I believe it has something to do with me running dual monitors. When I wake my computer, my secondary monitor appears to come up faster than my primary by just a fraction. Once my primary is on, there is a message saying something about the taskbar already being hidden (I think) and the taskbar on my primary monitor has the taskbar up. When I go to Taskbar Behaviors, 'Automatically hide the taskbar' is no longer checked. I'll select it again, and it will work fine until the system goes back into Sleep mode for a while, again.
Windows for home | Windows 11 | Settings
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Anonymous
2024-08-24T04:33:45+00:00 -
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Anonymous
2024-08-03T07:36:09+00:00 Or, you could hold the American people responsible, for not voting with their feet for a zero-defect solution from a superior software developer.
Don't you worry, you can't fool all of the people all of the time, in this great country.
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Anonymous
2024-08-02T13:02:19+00:00 Someone's touchy their "fix" didn't work...
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Anonymous
2024-08-02T11:38:06+00:00 I totally agree! I say thanks for posting anything that might be helpful, but quite frankly, if it's too technical or too fiddly, I don't necessarily have the time, knowledge or patience. I thank everyone who has come up with suggestions as to how to cure this miserable bug, but I hold only Microsoft responsible.