site doesn't work with unity interface

In Ubuntu, with Unity interface, It's not possible to accesss the site https://isscuritiba.curitiba.pr.gov.br/iss/default.aspx

But in Ubuntu, with Cinnamon and Gnome it works. In Kubuntu (KDE) and Linux Mint it works too.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2
Uname: Linux 3.19.0-25-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.17.2-0ubuntu1.5
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Fri Oct 2 21:40:57 2015
DistUpgraded: 2015-07-25 16:58:39,116 DEBUG enabling apt cron job
DistroCodename: vivid
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:0341]
   Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:0341]
InstallationDate: Installed on 2013-11-19 (682 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: MICRO-STAR INT'L CO.,LTD. MS-1034
PackageArchitecture: all
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=f8a56081-232f-4268-a824-5b6632b7370d ro locale=pt_BR quiet splash
SourcePackage: compiz
UpgradeStatus: Upgraded to vivid on 2015-07-25 (69 days ago)
dmi.bios.date: 11/15/2006
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: A1034IT3 V1.10 11/15/06
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: MICRO-STAR INT'L CO.,LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrA1034IT3V1.1011/15/06:bd11/15/2006:svnMICRO-STARINT'LCO.,LTD.:pnMS-1034:pvr0341:cvnMICRO-STARINT'LCO.,LTD.:ct10:cvrN/A:
dmi.product.name: MS-1034
dmi.product.version: 0341
dmi.sys.vendor: MICRO-STAR INT'L CO.,LTD.
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.9-2ubuntu1~vivid2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid2
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Fri Oct 2 21:16:00 2015
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 13125
 vendor SEC
xserver.version: 2:1.17.1-0ubuntu3