On Fri, Sep 29, 2017 at 2:20 PM, martin rudalics <rudalics@gmx.at> wrote:
> FWIW, on my system (ctwm with its default policy of focus following the
> mouse), the focus does *not* follow the mouse during a drag.
Neither on mine.
On a Mac with Emacs 25.3 with focus-follows-mouse and mouse-autoselect-window both set true, I get inconsistent behavior. Sometimes when moving between non-overlapping frames, the focus follows and other times it does not. It could be speed-related (I know there is a default dwell time) or the path my mouse traverses but I found the overall behavior unusable and turned it off.