Hi, My mouse wheel behaves in a bit strange way. Right after moving into an application window, neither up nor down scroll works until the second wheel "bump." Subsequent scrolls work fine until I move out from the window.
I use stretch (9.5 or maybe 9.6) mate desktop on AMD E-450, USB-wired Logitec mouse. Now the funny part: some application respond to the wheel scroll right from the first bump; some don't. In stretch 9.5 installed mate desktop: atril, frefox, and thunderbird work fine; caja, libreoffice, pluma, and mate-terminal miss the first bump; In stretch 9.5.0 live mate desktop: (debian-live-9.5.0-amd64-mate.iso) atril, firefox, pluma, and mate-terminal work fine; caja and libreoffice miss the first bump; In stretch 9.6 live mate desktop: (debian-live-9.6.0-amd64-mate.iso) atril, firefox, pluma, and mate-terminal work fine; caja and libreoffice miss the first bump; In stretch 9.6 live gnome desktop: (debian-live-9.6.0-amd64-gnome.iso) firefox works fine; evince, gedit, libreoffice, nautilus, and gnome-terminal miss the first bump; In jessie 8.11 live mate-desktop: (debian-live-8.11.0-amd64-mate-desktop.iso) all above mentioned programs work fine. Zoom-up/down by a mouse wheel behave the same way. That is, works fine on the good program window, miss the first ctrl/wheel-up-or-down on the unfortunate program window. If you have two USB mice connected, say A and B, alternate 'wheeling' responds similarly, like, A-up-one, B-up-one, A-down-one, B-up-one...will never get any response from unfortunate programs. Any suggestions? Fred (not a member of this mailing list, yet)