I downloaded Windows 11 2 days ago. I was a bit upset about the large taskbar, because I used the small taskbar in Windows 10.
That's why I googled how I could make the taskbar smaller. As solution I then created a new entry in the registry editor, in which I created a value under the path: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced, with the name TaskBarSi. In it I created the value to 0, which means size small (size 1= normal / size 2= large). Now some icons in the taskbar are bugged.