PC-BSD: Running QT applications from within a Warden "Ports" jail (for X11 applications)

I've been running PC-BSD 10.1.1 with great success. However, there are a few "bleeding edge" applications that I want to compile and run; most notably, Anki, my favorite flash-carding application / learning aid.

I started out by creating a "Ports Jail (insecure, allows running X applications)," which automatically downloads and installs the FreeBSD ports tree (a large library of applications that can be compiled to run on a FreeBSD system). I installed a few packages (binary, precompiled programs), including the ssh daemon and sudo.

From there, I descended into the ports tree in /usr/ports/games/anki, and then I executed a recursive make command, to automatically compile everything

/usr/bin/nice -n 19 make DISABLE_VULNERABILITIES=yes -DBATCH

This worked swimmingly, and a subsequent make install successfully integrated Anki into my jailed environment. However, a few issues remain:

1. X11 over SSH:  ssh -Y username@ports_jail does NOT forward X11 correctly. Launching any X11 program results in the following message:
   

   X11 connection rejected because of wrong authentication.
Error: Can't open display: localhost:11.0

   If you're SSHing in via a shell within your computer's X11 environment, this can be rectified with:
   

   export DISPLAY=":0.0"

   However, this doesn't really fix the ssh X11 forwarding problem, and I'm still at an impasse.
   
2. QT doesn't render correctly. When launched without environmental variables, I get the following results:
   
• A number of X11 errors when launching from the command line:
  
  QNativeImage: Unable to attach to shared memory segment.
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
  Resource id: 0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
Resource id: 0x0

• The initial screen is rendered improperly: gray windows, weird artifacts. 
To solve, modify the QT_GRAPHICSSYSTEM environment variable:
QT_GRAPHICSSYSTEM=native anki


I'm going to post my experiences to the PC-BSD forums, and see if some folks have some ideas about how to fix the issue.