[Bug 23077] New: UltraEdit 16.10: Plus sign doesn't appear in directory tree

http://bugs.winehq.org/show_bug.cgi?id=23077

Summary: UltraEdit 16.10: Plus sign doesn't appear in directory
                    tree
           Product: Wine
           Version: 1.2-rc2
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=28652)
 --> (http://bugs.winehq.org/attachment.cgi?id=28652)
Image showing the problem

Steps to reproduce:
1) remove ~/.wine
2) install UltraEdit
3) wine Uedit32.exe
4) close all popup windows (buy now, tip of the day etc.)
5) In "File View" Window click on plus sign of "C" then "Program Files"

6) Click on plus sign of "Internet Explorer" branch will unfold, plus sign
changes to minus sign
7) Click on minus sign of "Internet Explorer" branch will fold

Behaviour:
After seventh step minus sign of "Internet Explorer" stays minus sign and I
cannot unfold that branch anymore

Expected behaviour:
After seventh step minus sign of "Internet Explorer" should convert itself into
plus sign and I should have ability to unfold the branch

In terminal I get only 
fixme:win:LockWindowUpdate (0x100a0), partial stub!
fixme:win:LockWindowUpdate ((nil)), partial stub!
for every successful fold/unfold operation