[Bug 57805] New: Wine CoreMIDI: Extra program change event on sending program change through MIDI Output from winmm

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57805

Bug ID: 57805
           Summary: Wine CoreMIDI: Extra program change event on sending
                    program change through MIDI Output from winmm
           Product: Wine
           Version: unspecified
          Hardware: aarch64
                OS: MacOS
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winecoreaudio.drv
          Assignee: [e-mail]
          Reporter: [e-mail]

Created attachment 78012
  --> https://bugs.winehq.org/attachment.cgi?id=78012
Screen shot of the sample output

I tried to use Falcosoft SoundFont Player 6 (a MIDI player) using Wine on
MacOS, I tried to play some MIDI files through it but it always seem to be
stuck on program 00 (Acoustic Grand Piano) on all tracks.

I tried to capture the MIDI output data through Pocket MIDI (a free MacOS app
something like MIDI-OX on Windows), it seems there is an error on sending 2
byte messages such as Program Change. Attached is the sample output from
sending one program change from the UI.

Expected output the Program Change message should only be sent once, not twice.