I have the same issue on a Dell XPS running 16.04. VERY reproducible every time I leave two fingers on the touchpad for more than a second or so.
Typical behavior is two finger scrolling, pause to scan without lifting fingers, alt-tab behavior is triggered and quickly switches to another window. Terribly annoying. Makes laptop virtually useless for work.
I have the same issue on a Dell XPS running 16.04. VERY reproducible every time I leave two fingers on the touchpad for more than a second or so.
Typical behavior is two finger scrolling, pause to scan without lifting fingers, alt-tab behavior is triggered and quickly switches to another window. Terribly annoying. Makes laptop virtually useless for work.