I can confirm this bug is happening on Ubuntu GNOME 17.04 under Wayland session. Running from terminal produces the following:
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged. Segmentation fault (core dumped) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1632770 Title: Synaptic segfault on GNOME on Wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/1632770/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
