Using "xkill" to kill an open EFM window kills the whole desktop in E23

As the title says:
Using "xkill" on an open EFM window kills the entire Desktop and logs the user out.

Here's the syslog that goes with it:

When using "xkill" to kill the open EFM window:

Jan 11 10:05:09 localhost systemd[1]: Removed slice User Slice of UID 116.
Jan 11 10:05:25 localhost at-spi-bus-launcher[26760]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
Jan 11 10:05:25 localhost at-spi-bus-launcher[26760]: after 29 requests (29 known processed) with 0 events remaining.

When logging in again:

Jan 11 10:07:24 localhost systemd[1]: Stopped Session c7 of user lightdm.
Jan 11 10:07:24 localhost systemd[1]: Started Session 47 of user antares.
Jan 11 10:07:25 localhost kernel: [63175.367773] efreet_icon_cac[27438]: segfault at 7fff9c1d5ff8 ip 00007f3ae3b9fde7 sp 00007fff9c1d6000 error 6 in libeina.so.1.23.0[7f3ae3b8b000+4f000]
Jan 11 10:07:25 localhost kernel: [63175.367778] Code: 3f db 05 00 48 8d 0d 45 0b 04 00 e9 3d ff ff ff 0f 1f 00 41 57 45 89 c2 41 56 4d 89 ce 41 55 49 89 cd 41 54 49 89 d4 55 89 f5 <53> 89 fb 48 81 ec 38 08 00 00 64 48 8b 04 25 28 00 00 00 48 89 84