http://bugzilla.suse.com/show_bug.cgi?id=1053959 http://bugzilla.suse.com/show_bug.cgi?id=1053959#c8 --- Comment #8 from Jiri Slaby <jslaby@suse.com> --- In KDE/plasma, open one firefox and one other window (e.g. xterm). Switch to xterm by alt-tab making firefox an "inactive window" = in background. Even though firefox is inactive, you still can scroll the content by using mouse scroll wheel over the inactive window (while xterm is still in foreground = active). That does not work with MOZ_USE_XINPUT2=1. Works: versions up to 52.3 Does not work: version starting 54 No matter which repository I use (42.3 repo on TW installation, TW repo on 42.3 or on 42.2). So only the ff version matters, exactly the one which added MOZ_USE_XINPUT2=1. Needless to say that I use no touchpad, it's all with mouse. -- You are receiving this mail because: You are on the CC list for the bug.