In synaptic: search for overlay-scrollbar, right click and instead of selecting "Mark for removal", select "Mark for complete removal". Now click apply and /etc/X11/Xsession.d/81overlay-scrollbar will be removed as well as the overlay scrollbar library.
You need to log out and in again for the change to take effect.
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In synaptic: search for overlay-scrollbar, right click and instead of selecting "Mark for removal", select "Mark for complete removal". Now click apply and /etc/X11/ Xsession. d/81overlay- scrollbar will be removed as well as the overlay scrollbar library.
You need to log out and in again for the change to take effect.