I am surprised that even after months of reporting this bug it is still there even in the latest BETA 2.0.7.1

the issue is that I have disabled Taskbar Thumbnail previews using this reg edit:

Windows Registry Editor Version 5.00

 

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]

 

"ExtendedUIHoverTime"=dword:0001d8a8

 

But if you enable the let Start11 enhance my taskbar feature, it still shows the taskbar thumbnails and not only that, it is so buggy that if you right-click on an open Window to close it, it keeps disappearing, look at this video: 

https://gofile.io/d/fZAFac