A quite annoying "feature" of the CTRL+TAB cycling of recent tabs is that the the mouse pointer will focus the tab preview that appears, and thus making the cycling with CTRL+TAB completely illogical.
Focusing a tab with the mouse pointer is FINE, but it should only happen when you actively move the mouse pointer. If the mouse pointer is just idly placed on the middle of the screen somewhere, it should not change the tab cycle focus.