On Tuesday, June 1, 2021, 09:39:41 AM PDT, Jonathan Stone via cctalk <cctalk@classiccmp.org> wrote:
>The described behavior is what you'd get in X11 if the middle-button is "stuck >on" (autorepeating) after being pressed the first time, >and you move the >mouse. Not sure if that helps, though. Supposedly there's an "xev" with Decwindows Motif. Do you have one in DECW$UTILS: ? Try it (with good mouse first) and see what it reports when the bad mouse goes bad.