Windows 11 task bar won't stay hidden

The taskbar won't stay hidden. And yes I've checked the automatically hide the task bar setting. I've also triad a myriad of other "solutions and fixes", I've found on the web to no avail. This one issue, although it may seem innocuous, is the only reason I have not upgraded to Windows 11 on several of the machines I use, and will not as long as Windows 10 remains available until this issue is fixed. Please please take this seriously and provide a permanent solution, not one of these solutions typically found on blogs such as "reset Windows Explorer" from the task manager, Although this particular fix does work, it only works for a short time and then the problem returns. I'm sure there are many others that are very frustrated by this problem besides myself. The taskbar reappearing steals the bottom portion of any window that has been maximized, so if there's a button you need to get to you must do one of two things; reduce the size of the window in the app you're in so that the task bar isn't covering the button you need to get to, or do the one other temporary fix; click on the Windows keyboard key - twice - to make the task bar go away. Then if at any time your mouse pointer even just grazes the top of the task bar location at the bottom of the screen, it's back and stays unhidden. Any fix needs to be independent of any application running, it should be a native action that can't be overridden by other applications. I know that when there's a notification this brings up the taskbar, well okay, I'll acknowledge the notification to make the taskbar go away in this case, but this is NOT the issue either.