[Bug 53117] New: USER32: Drop-list of combobox not closed when the user clicks outside

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53117

Bug ID: 53117
           Summary: USER32: Drop-list of combobox not closed when the user
                    clicks outside
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 72571
  --> https://bugs.winehq.org/attachment.cgi?id=72571
Open the drop list of the combobox.

Step to reproduce:
1) open an application that allows you to show a combobox, for example WINE
notepad.
2) then select from menu "File->Open" to display the open file dialog and press
the button to open the drop down list of the combobox (see attached image 1).
3) now, click on the title bar of the open file dialog and try to move it: the
drop down list will be still visible and completely disconnected from its
control (see attached image 2).

Here, I used the WINE notepad as example but the bug can be reproduced by all
applications with a combobox.