Version: M53-dev, platform 8530.11.0, multiple chrome devices
OS: chromeOS 53.0.2785.13

This problem arises when executing the Kiosk App Compatibility test case 1.4.15  Enterprise: Content can be download through a Proxy Server (URL: https://testtracker.googleplex.com/efforts/testcase/detail/6272374)

What steps will reproduce the problem?

(1) Set up an organization unit in Cpanel with the following characteristics:
    Device Management > Network > Ethernet
    Make sure only one ethernet entry exists, and give it these properties:
      Name: proxy_nossl
      Authentication type:  None
      Proxy Settings:
        Manual Proxy Configuration
        HTTP proxy host:  108.59.86.3,  Port 8888
        [unchecked] Use this proxy server for all protocols
        Secure HTTP proxy host: 108.59.86.3,  Port 8888
        FTP proxy host: ftp.proxy.com,  Port 21
        SOCKS host:  SOCKS5,  Port 1080
        No proxy for:  [leave blank]

      Restrict access to this Ethernet network by platform:
        Only check the Chromebooks box.

      Apply network:  by device

Then click the APPLY button.
       
(2) Navigate in Cpanel to:
    Device Management > Chrome Management > Device Settings
    then select the OU you just created the ethernet entry for.

    Under Kiosk Settings:
      Kiosk Apps > Manage Kiosk Applications
      Click on Chrome Web Store, search for app id "alhlkpgheiefedomljbenmkpconkffhk" (the StratosMedia app).
      Add that app to your kiosk list.
      Click "Save" tp exit from app mgmt.
    Click SAVE to apply the Kiosk Settings change.

You can have the app auto-launched if you want.
    
 
(3) Boot your client device and enterprise enroll it.

(4) In Cpanel, assign the device to the OU with the proxy ethernet.

(5) Wait a couple of minutes, or reboot the device to get the StratosMedia app installed.

(6) Launch the StratosMedia App.  When it asks you to register, you can enter any name, and the Key is "RMRTEE-LT27HA-HU37TY-6JWCC5".
Click the "Register" button.


What is the expected output?

The app should display multiple "panes" on the screen, with advertisements in one, news stories in another, weather reports, etc.


What do you see instead?

The screen is pitch black.  No error message is shown, nor any hint that something is wrong.


The StratosMedia app behaves correctly when it has a direct internet connection, and in a PAC environment (Proxy Auto Configuration).

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