This is because gnome-terminal now correctly delivers the right-click event to vim (or any application that is interested in mouse events). In 14.04 it was impossible for vim (or any other app) to receive right- clicks in gnome-terminal.
You might either disable mouse support in vim, or invoke the context menu with Shift + right-click, or use the top menu bar or the shortcut key Ctrl + Shift + C/V. ** Bug watch added: GNOME Bug Tracker #13299 https://bugzilla.gnome.org/show_bug.cgi?id=13299 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/1610882 Title: No context menu in VIM in gnome-terminal after upgrade to xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1610882/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs