For me the icon is there in the taskbar, but when you click on it, the widgets start to populate, you can see them for an instant, then they disappear. Otherwise everything in Windows 11 seems to be working fine, at least after a few days. Multiple restarts and checking updates has not solved this. Not a big deal, I don't think I am missing too much with this, and eventually I suspect some update will fix it. Taxbar icon size is also no longer adjustable, I have read this is not just for me, and it can be done with some registry work, but not going there!
@eddiesq,
Which display adapter and Driver do you have ?
The bug you described was the same for me on 2 machines that had Intel Display Adapters with some specific drivers.