[Bug 21731] New: Regression: the return key has no effect in an input dialog on a win16 application

http://bugs.winehq.org/show_bug.cgi?id=21731

Summary: Regression: the return key has no effect in an input
                    dialog on a win16 application
           Product: Wine
           Version: unspecified
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Using git bisect looks as the commit 178ebae4c01c6aed896138d4a0c174c489814f1b
is last working version, problems begin with commit
aabe5f150f834fbf230787c7e228f4b68c39ee32 titled: "user32: Move 16-bit instance
normalization to CreateWindowEx16", after there are a lot of others similar
changes.

How to reproduce:

* Download this application (already used in a previous bug report, copyrighted
text is deleted): http://cosoleto.free.fr/wine_sample.zip
* Unpack to drive C:
* wine Devwin.exe (current directory must be: "C:\Devoto-Oli")
* click on menu "_Ricerca"
* type "test" inside input dialog box, then RETURN

This is the problem: no effect.

* click on "Ricerca" button for getting the expected effect for "test" string:
the dialog box will closed and a new different window appear.