StacktraceTop: gtk_grab_notify_foreach (child=0x10ff040, data=0x7fff08ca20e0) at /build/buildd/gtk+3.0-3.1.18/./gtk/gtkmain.c:2097 gtk_menu_shell_forall (container=<optimized out>, include_internals=<optimized out>, callback=0x7fe3b4877550 <gtk_grab_notify_foreach>, callback_data=0x7fff08ca20e0) at /build/buildd/gtk+3.0-3.1.18/./gtk/gtkmenushell.c:1264 gtk_grab_notify_foreach (child=0x103c2b0, data=0x7fff08ca20e0) at /build/buildd/gtk+3.0-3.1.18/./gtk/gtkmain.c:2114 gtk_grab_notify_foreach (child=0x10fa010, data=0x7fff08ca20e0) at /build/buildd/gtk+3.0-3.1.18/./gtk/gtkmain.c:2114 gtk_grab_notify (group=0x1607a60, device=<optimized out>, old_grab_widget=<optimized out>, new_grab_widget=<optimized out>, from_grab=<optimized out>) at /build/buildd/gtk+3.0-3.1.18/./gtk/gtkmain.c:2187
StacktraceTop: notify_ foreach (child=0x10ff040, data=0x7fff08ca 20e0) at /build/ buildd/ gtk+3.0- 3.1.18/ ./gtk/gtkmain. c:2097 shell_forall (container= <optimized out>, include_ internals= <optimized out>, callback= 0x7fe3b4877550 <gtk_grab_ notify_ foreach> , callback_ data=0x7fff08ca 20e0) at /build/ buildd/ gtk+3.0- 3.1.18/ ./gtk/gtkmenush ell.c:1264 notify_ foreach (child=0x103c2b0, data=0x7fff08ca 20e0) at /build/ buildd/ gtk+3.0- 3.1.18/ ./gtk/gtkmain. c:2114 notify_ foreach (child=0x10fa010, data=0x7fff08ca 20e0) at /build/ buildd/ gtk+3.0- 3.1.18/ ./gtk/gtkmain. c:2114 widget= <optimized out>, new_grab_ widget= <optimized out>, from_grab= <optimized out>) at /build/ buildd/ gtk+3.0- 3.1.18/ ./gtk/gtkmain. c:2187
gtk_grab_
gtk_menu_
gtk_grab_
gtk_grab_
gtk_grab_notify (group=0x1607a60, device=<optimized out>, old_grab_