[Bug 30189] New: Strong Bad's Cool Game launcher: buttons not working

http://bugs.winehq.org/show_bug.cgi?id=30189

Bug #: 30189
           Summary: Strong Bad's Cool Game launcher: buttons not working
           Product: Wine
           Version: 1.4
          Platform: x86
               URL: http://www.fileplanet.com/190337/190000/fileinfo/Stron
                    g-Bads-Cool-Game-for-Attractive-People---Episode-1:-Ho
                    mestar-Ruiner---Demo
        OS/Version: Linux
            Status: NEW
          Keywords: download, regression
          Severity: normal
          Priority: P2
         Component: mshtml
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
                CC: [e-mail]
    Classification: Unclassified
   Regression SHA1: c9eed8f987ff3fa19bc11ef3baf319d697f7b2e4

Created attachment 39402
  --> http://bugs.winehq.org/attachment.cgi?id=39402
terminal output

The buttons in the launcher are unclickable in several games from Telltale
Games (the Wallace & Gromit series is also affected).

Steps to reproduce the problem with the demo version:
1. Install the demo.
2. Start the demo with Homestar101.exe and wait until the launcher is fully
loaded.
3. Click on the grey <No thanks, just take me to the demo!> button in the lower
right corner...nothing happens.

Buttons do work in Wine-1.4 but not in wine-1.4-284-gc5faf15 (Gecko 1.5
installed):

c9eed8f987ff3fa19bc11ef3baf319d697f7b2e4 is the first bad commit
commit c9eed8f987ff3fa19bc11ef3baf319d697f7b2e4
Author: Jacek Caban 
Date:   Tue Mar 13 11:46:42 2012 +0100

mshtml: Don't use ITypeInfo for InvokeEx(DISPATCH_PROPERTYGET)
implementation.

:040000 040000 d9c0e9cc333490e70afd08f4e3c1607effced622
5ce939cf48297ed8515d12e2cc1ceb1f8c47fad7 M    dlls

git checkout c9eed8f987ff3fa19bc11ef3baf319d697f7b2e4   >>unclickable buttons
git reset --hard HEAD^   >>buttons work