[Bug 38546] New: Strong Bad's Cool Game launcher: login window doesn't appear properly

https://bugs.winehq.org/show_bug.cgi?id=38546

Bug ID: 38546
           Summary: Strong Bad's Cool Game launcher: login window doesn't
                    appear properly
           Product: Wine
           Version: 1.7.42
          Hardware: x86
               URL: http://www.fileplanet.com/190337/190000/fileinfo/Stron
                    g-Bads-Cool-Game-for-Attractive-People---Episode-1:-Ho
                    mestar-Ruiner---Demo
                OS: Linux
            Status: NEW
          Keywords: download, regression
          Severity: normal
          Priority: P2
         Component: mshtml
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
   Regression SHA1: 71cae1fcebb6d0cb78279e81b28caf663c5a9b2a
      Distribution: ---

Created attachment 51416
  --> https://bugs.winehq.org/attachment.cgi?id=51416
terminal output

Noticed this in the current git version when starting the Strong Bad or Wallace
& Gromit series from Telltale Games.

The login window is showing an empty(white) screen, with only an input field
for the serial number in the upper left corner. 
In this state there's no way to launch the demo because the <No thanks, just
take me to the demo> button is missing too.

The login window appears properly when either IE6 or IE8 is installed, but the
same empty window is shown when IE7 is installed.

The problem is present since

71cae1fcebb6d0cb78279e81b28caf663c5a9b2a is the first bad commit
commit 71cae1fcebb6d0cb78279e81b28caf663c5a9b2a
Author: Jacek Caban 
Date:   Mon May 4 19:14:25 2015 +0200

mshtml: Added IHTMLEventObj::get_returnValue implementation.

Tested in wine-1.7.42-77-g3599f95

SBCG4AP_Homestar_Ruiner.exe
sha1: dd2f18068f16a1353a3490d95723b746cec8050f