Sorry for the bad English, I'm using google translator.
I'm having some problems with the graphical interface Enlightenment, eventually it freezes in what I could observe, every time I run Alt + F2 calling it constantly the problem happens.
I've updated to the latest version, removed all the ports and installed again, reinstalled the system from scratch and the problem happens, another detail I noticed is that only occurs when I'm using the proprietary Nvidia modules.
Follow the system information, what you need information is just request that I make available.
root@matilda:/home/NoRm4nD # uname -a
FreeBSD matilda.underground 11.0-STABLE FreeBSD 11.0-STABLE #8 r310546M: Thu Jan 5 10:43:38 BRST 2017 firstname.lastname@example.org:/usr/obj/usr/src/sys/MATILDA amd64
*** Bug 219675 has been marked as a duplicate of this bug. ***
Problem solved after finalizing xconsole that is initialized along with enlightenment, waiting for the completion of other tasks to confirm that the cause of enlightenment and anomalous behavior of the enlightenment taskbar are freezing side effects of xconsole execution.
There was an improvement in performance also after finishing xconsole.
It seems the problem was solved per comment #2.