Description of problem:
the hang occured while sending an email from my gmail-account (not included via online-accounts, but manually). klicking send left evolution in freezed state. closing the window did not raise the "does not seem to respond"-dialog but causes evolution to crash (as what this is the crashreport for). the email i tried to send was in "sent" folder but i have reasonable doubt that my email was not sent. 

* gnome-session was restarted before

Version-Release number of selected component:
evolution-3.8.5-2.fc19

Additional info:
reporter:       libreport-2.1.6
backtrace_rating: 4
cmdline:        evolution
crash_function: g_type_check_instance_cast
executable:     /usr/bin/evolution
kernel:         3.10.11-200.fc19.x86_64
runlevel:       N 5
uid:            1000

Truncated backtrace:
Thread no. 1 (8 frames)
 #0 g_type_check_instance_cast at gtype.c:4027
 #1 enl_popup_grab at e-name-selector-list.c:162
 #2 enl_popup_enter_notify at e-name-selector-list.c:250
 #3 _gtk_marshal_BOOLEAN__BOXED at gtkmarshalers.c:85
 #8 gtk_widget_event_internal at gtkwidget.c:6714
 #9 gtk_widget_event at gtkwidget.c:6371
 #10 gtk_main_do_event at gtkmain.c:1738
 #16 gtk_main at gtkmain.c:1156