Comment 3 for bug 1638835

StacktraceTop:
 gdk_property_get (window=window@entry=0x0, property=property@entry=0x55, type=type@entry=0x46, offset=offset@entry=0, length=length@entry=2147483647, pdelete=pdelete@entry=0, actual_property_type=actual_property_type@entry=0xbfd77d3c, actual_format_type=actual_format_type@entry=0xbfd77d40, actual_length=actual_length@entry=0xbfd77d44, data=data@entry=0xbfd77d48) at ././gdk/gdkwindow.c:11595
 get_utf8_property (atom=0x55, window=0x0) at screenshot-utils.c:61
 screenshot_get_window_title (win=<optimized out>) at screenshot-utils.c:1079
 find_current_window (window_title=0x2033d07c <window_title>) at mate-screenshot.c:1112
 push_check_file_job (rectangle=0x0) at mate-screenshot.c:1138