Scrolling in XML tree window

I open XML and display window with tree on right side.
Now when i click to tree window and use scrollwheel on mouse, cursor moves thru tree (OK)
But when i press "set focus to source after goto" it stops to scroll with tree, but scrolls with file content (left win) instead. Only way to move in tree is to use scroll bar on right side.
I think that is is bug.

Hello

Why do you consider it as bug? If goto source is active, it mens focus will move into source code after you click into code explorer. And it's standard behavior that mouse scroll scrolls with focused control.