[Bug 55260] New: wineserver and wine -k don't kill wine process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55260

Bug ID: 55260
           Summary: wineserver and wine -k don't kill wine process
           Product: Wine-staging
           Version: 8.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail]
      Distribution: ---

ubuntu 23.04 and wine-staging 8.12
Install the Bentley CONNECTION Client from this bug:
https://bugs.winehq.org/show_bug.cgi?id=55248

After installing the program, the uninstaller finishes upon clicking on "Don't
show this again", however the Client launches as a separate process. Click on
system tray and Exit, however the terminal does not finish the wine process and
can't be killed.

The wine log is:
DFMT_B8G8R8X8_UNORM stub!
04c8:fixme:wininet:InternetSetOptionW Option
INTERNET_OPTION_END_BROWSER_SESSION: semi-stub
04c8:fixme:wtsapi:WTSUnRegisterSessionNotification Stub 00000000000200BE
04c8:fixme:uiautomation:UiaClientsAreListening ()
04c8:fixme:win:UnregisterPowerSettingNotification (00000000DEADBEEF): stub
04c8:fixme:wtsapi:WTSUnRegisterSessionNotification Stub 0000000000030066
04c8:fixme:dwmapi:DwmDetachMilContent (000000000002006E) stub
(waiting unless I Ctrl+C)

Can't be killed from another terminal:
wineserver -k has exit code 1
killall wineserver
wineserver: no process found

I'm not able to detect the process ID because bash doesn't have any child
process, yet the log is displayed in konsole.