Epiphany 3.22.5 and WebKit 2.15.4. I'm running Epiphany with the dconf key: "process-model" = "shared-secondary-process" And the env variable: "export G_DEBUG=fatal-warnings" The compilation was done with CMake args: '-DENABLE_THREADED_COMPOSITOR=OFF -DPORT=GTK -DCMAKE_BUILD_TYPE=Release -DENABLE_MINIBROWSER=ON -DCMAKE_C_FLAGS_RELEASE="-O0 -g -DNDEBUG -DG_DISABLE_CAST_CHECKS" -DCMAKE_CXX_FLAGS_RELEASE="-O0 -g -DNDEBUG -DG_DISABLE_CAST_CHECKS"' and with the arguments: --incognito-mode --profile ${HOME}/.config/epiphany This happens immediately when the WebProcess sarts running and crashes continuously due to the G_DEBUG=fatal-warnings env variable.
This is ephy issue, I guess you don't have gvfs. See https://bugzilla.gnome.org/show_bug.cgi?id=776682