Opening TI by whichever means (clicking on 7TT icon or double clicking empty space) causes it to overlap the taskbar, meaning it can get in the way. TI should appear with a spacial buffer between it and the taskbar, similar to the jump lists. Using a gap of 8px would streamline TI with the taskbar and maintain consistency with the display of the jumplist.

I have my config set up to always show labels, auto combine when out of space, decombine on hover and show labels.

Having read another issue here I don't know if this is possible, but it seems like it'd be nice if when you mouse-over to decombine, that you could prevent windows from auto-combining elsewhere on the taskbar until the mouse leaves that group, so that the only change is the hovered group decombining, as that would stabilise the movement somewhat.

This is somewhat similar in concept to how browsers these days don't auto-resize tabs again when you close one till you mouse-exit the tab-bar.

The trick would be doing that without forcibly decombining things elsewhere on the taskbar that were combined by windows due to lack of space.

When portable application is pinned to taskbar and running, after a while this application will lose its taskbar icon highlight, application is still running though because I can see it in my Task Manager, but when I click its taskbar icon it will open a new program instance instead of already running application, it failed to open already running application because taskbar icon lost its highlight, this problem occurs only with portable application, version 4.2.2 didn't have this problem. And this problem occurs with all portable applications which I have tried.

So the problem is: Portable application which is pinned to taskbar will lose its highlight after a while.

Decombine active group doesn't work.