[Bug 46274] New: Total Commander 8.52a: Closing the Multi-Rename window after using it is slow and messes up the listbox caret

https://bugs.winehq.org/show_bug.cgi?id=46274

Bug ID: 46274
           Summary: Total Commander 8.52a: Closing the Multi-Rename window
                    after using it is slow and messes up the listbox caret
           Product: Wine
           Version: 4.0-rc1
          Hardware: x86
               URL: http://web.archive.org/web/20160121065109/http://total
                    cmd2.s3.amazonaws.com/tcmd852ax32.exe
                OS: Linux
            Status: ASSIGNED
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
      Distribution: ---

1) Launch Total Commander and press CTRL+M or go to Files->Multi Rename Tool...
2) Press "Start!" which should work fine.
3) Now close the Multi-Rename window (i.e. click on Close or press ESC)

Observe how there's a few seconds of freeze lag, after which the listbox caret
in the panel is gone. Switching to the other panel and back brings it back.

I did a few investigations and it seems this is not a problem with the listbox
at all. Rather, it's a problem with recursive SetFocus and window activation,
that's why it's so slow (until it reaches a limit). I'll try to fix it like on
Windows so I'll have to see how Windows handles this situation (with testcases
of course).

It's interesting to note that this does not happen if you don't click on
"Start!" in the Multi-Rename Tool.