I know that gnome-shell tends to crash on almost any occasion in Fedora 27, but now this also happens with the latest version of Firefox. Usually, not always, but sometimes using the "forget button" in Firefox. If not at the first occasion, usually at the second or third, and this bug is reproducible. I find the following error in the logs: reason: gnome-shell killed by SIGTRAP crash_function: dump_gjs_stack_on_signal_handler executable: /usr/bin/gnome-shell package: gnome-shell-3.26.2-4.fc27 kernel: 4.14.16-300.fc27.x86_64 Any idea why this happens? Anyone with an idea on how to fix this?