Remmina not showing entire desktop, Windows Remote Desktop Connection does.

[penalvch]

Upstream:
https://github.com/FreeRDP/Remmina/issues/534

What is expected to happen with Remmina in Vivid or Wily, is RDP to a Vivid server with xrdp, x11vnc, and using gnome-flashback (Metacity) is it shows the entire desktop successfully.

What happens instead is it is missing the lower ~5% on the right hand side (truncating part of the gnome-panel icons) and the bottom (where the windows are) as per the attached screenshot. This does not happen from Windows 8.1 RDC so this is a Remmina issue. Tried toggling Scaled Mode, no change.

Remmina Desktop Preference > Basic tab > Resolution Use client resolution > Color depth High color (16 bpp), High color (15 bpp), and 256 colors (8 bpp) > Advanced tab > Quality Best (slowest), Sound Off > Security Negotiate > all other configurations unchecked.

Vivid setup:
sudo apt-get -y install xrdp gnome-session-flashback gnome-flashback x11vnc && sudo apt-get -y remove vnc4server && sudo nano /etc/xrdp/xrdp.ini

Change the top part to the following:
#START
[globals]
bitmap_cache=yes
bitmap_compression=yes
port=3389
crypt_level=high
channel_code=1
max_bpp=24
#black=000000
#grey=d6d3ce
#dark_grey=808080
#blue=08246b
#dark_blue=08246b
#white=ffffff
#red=ff0000
#green=00ff00
#background=626c72

[xrdp1]
name=sesman-X11vnc
lib=libvnc.so
username=ask
password=ask
ip=127.0.0.1
port=5900
#END

sudo nano /etc/systemd/system/x11vnc.service
#START
After=multi-user.target

[Service]
Type=simple
ExecStart=/usr/bin/x11vnc -loop -auth guess -rfbauth /home/USERNAME/.vnc/passwd -rfbport 5900 -forever -nevershared -repeat

[Install]
WantedBy=multi-user.target
#END

sudo chmod u+x /etc/systemd/system/x11vnc.service
sudo systemctl daemon-reload
sudo systemctl enable x11vnc.service
sudo reboot now

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: remmina 1.1.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-11.11-generic 3.19.3
Uname: Linux 3.19.0-11-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17-0ubuntu1
Architecture: amd64
Date: Fri Apr 3 17:06:25 2015
InstallationDate: Installed on 2015-04-02 (1 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: remmina
UpgradeStatus: No upgrade log present (probably fresh install)

[penalvch (penalvch)]

Using Remmina in Wily and remoting into Vivid, after updating Vivid recently this problem went away.