Yes, I have the same issue, it is annoying.After applying the registry change, hovering over application icons no longer showed previews/hover controls. I suspect it may be that they are continuing to appear above the taskbar, so are now off-screen. Is that an expected limitation with this registry hack?
With a registry tweak, you can relocate the taskbar from the bottom to the top of the display.
How to Move the Taskbar to the Top in Windows 11 : Read more