I am getting exactly the same behavior, running Ubuntu 18.04 LiveCD on a Dell Venue 11 Pro 7140.
Using the touchscreen to click an icon in the dash results in TWO instances of the given application being created. Using the touchscreen to click the "Show Applications" icon does nothing -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1765356 Title: "Show Applications" button triggers too often on touchscreen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1765356/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs