A duplicate of http://tweaker.userecho.com/topic/166684-a-group-cant-be-closed-by-middle-click/ ?

OK. Next thing, open Taskbar Inspector and check the "Group pinned items" for the problematic programs:

http://i.snag.gy/G3hON.jpg

Do you have the "Don't group pinned items" option checked?

http://i.snag.gy/iGrTH.jpg

I need more details to try and reproduce it.

Please provide me with:

* Your Windows version - 7/8/8.1 32/64 bit.

* A screenshot of the tweaker's options you're using.

* A screenshot of the taskbar's properties.

As for the hover delay, see:

http://www.sevenforums.com/tutorials/1884-mouse-hover-time-change.html

I need more details to try and reproduce it.

Please provide me with:

* Your Windows version - 7/8/8.1 32/64 bit.

* A screenshot of the tweaker's options you're using.

* A screenshot of the taskbar's properties.

As for the hover delay, see:

http://www.sevenforums.com/tutorials/1884-mouse-hover-time-change.html

In v4.3.1 there's a registry option to hide the start button in Windows 8.1.

You might want to try it out.