Bug 1329883

Description of problem:
I was trying to move a just created launcher to the first place, where the default launchers were blocked

Version-Release number of selected component:
mate-panel-1.12.2-1.fc23

Additional info:
reporter:       libreport-2.6.4
backtrace_rating: 4
cmdline:        mate-panel
crash_function: gtk_widget_get_parent
executable:     /usr/bin/mate-panel
global_pid:     9080
kernel:         4.4.7-300.fc23.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 gtk_widget_get_parent at gtkwidget.c:6483
 #1 mate_panel_applet_get_panel_widget at applet.c:50
 #2 mate_panel_applet_locked_change_notify at applet.c:196
 #3 g_cclosure_marshal_VOID__STRINGv at gmarshal.c:1794
 #4 _g_closure_invoke_va at gclosure.c:864
 #7 g_settings_real_change_event at gsettings.c:386
 #8 ffi_call_unix64 at ../src/x86/unix64.S:76
 #9 ffi_call at ../src/x86/ffi64.c:525
 #10 g_cclosure_marshal_generic_va at gclosure.c:1600
 #11 _g_closure_invoke_va at gclosure.c:864

This is a private, duplicate bug report of bug 1279060. The report has been created because Bugzilla cannot grant access to a comment for a specific group.