today's upgrade severely damaged my system. After it, the mouse became behaving randomly. Sometimes the left click opens a right click menu, sometimes it issues double-click, very often it closes the current document (tab, not a whole app). Noticed for all browsers, konsole, skype
uname -a Linux iv-desktop 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 8.7 (jessie) Release: 8.7 Codename: jessie