pavucontrol crashes when faced with ctrl+w (Window Close) when running under cwm

Hi,

Under CalmWM (cwm) applications normally close themselves when facing a ^W, which tells the application to exit and close window.

When pavucontrol recieves this message, it seg faults.

Stack track

(gdb) exec-file /usr/bin/pavucontrol 
(gdb) r
Starting program: /usr/bin/pavucontrol 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff50e7640 (LWP 28802)]
[New Thread 0x7ffff48e6640 (LWP 28803)]

Thread 1 "pavucontrol" received signal SIGSEGV, Segmentation fault.
0x00007ffff7d62851 in Gtk::Main::quit() () from /usr/lib/libgtkmm-3.0.so.1
(gdb) bt
#0  0x00007ffff7d62851 in Gtk::Main::quit() () at /usr/lib/libgtkmm-3.0.so.1
#1  0x000055555559c0c6 in  ()
#2  0x00005555559ea8e0 in  ()
#3  0x00007ffff7dcc218 in Gtk::Widget_Class::key_press_event_callback(_GtkWidget*, _GdkEventKey*) () at /usr/lib/libgtkmm-3.0.so.1
#4  0x00007ffff6fc5249 in  () at /usr/lib/libgtk-3.so.0
#5  0x00007ffff6f1980a in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#6  0x00007ffff6f19980 in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#7  0x00007ffff728a705 in  () at /usr/lib/libgtk-3.so.0
#8  0x00007ffff7123eb2 in  () at /usr/lib/libgtk-3.so.0
#9  0x00007ffff712513d in gtk_main_do_event () at /usr/lib/libgtk-3.so.0
#10 0x00007ffff6886863 in  () at /usr/lib/libgdk-3.so.0
#11 0x00007ffff68d7364 in  () at /usr/lib/libgdk-3.so.0
#12 0x00007ffff6e1343c in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#13 0x00007ffff6e611d9 in  () at /usr/lib/libglib-2.0.so.0
#14 0x00007ffff6e12221 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#15 0x00007ffff65c8c9e in g_application_run () at /usr/lib/libgio-2.0.so.0
#16 0x000055555558a7e4 in  ()
#17 0x00007ffff6d62060 in (anonymous namespace)::ctype_w () at /usr/lib/libstdc++.so.6
#18 0x00007fffffffe088 in  ()
#19 0x0000000000021000 in  ()
#20 0x00005555555d4648 in  ()
#21 0x00007fffffffe0f8 in  ()
#22 0x00007ffff793c4d0 in  () at /usr/lib/libgiomm-2.4.so.1
#23 0x0000000000000000 in  ()
(gdb)