I have the same symptoms but I am not using gnome-shell. I use i3-wm with the synaptics drivers, so I believe the problem might be comming from somewhere else than gnome-shell. Maybe from the drivers.
(sorry for the double comment) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/991707 Title: Mouse pointer (touchpad) gets stuck often To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/991707/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs