[Bug 47575] New: Office 365 Excel: DDE Failure on close

https://bugs.winehq.org/show_bug.cgi?id=47575

Bug ID: 47575
           Summary: Office 365 Excel: DDE Failure on close
           Product: Wine
           Version: 4.11
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ArchLinux

Created attachment 64979
  --> https://bugs.winehq.org/attachment.cgi?id=64979
Terminal output (stdout)

Following the latest instructions on AppDB with the latest wine version
(4.11-1), everything runs beautifully. Word and Powerpoint run flawlessly so
far, but whenever I close a file in Excel, I get a small error window that says
"DDE failure." And then, Excel sequentially tries to open my file with a number
of different extensions tacked on. For example, "test.xlsx.COM" then
"test.xlsx.EXE" then ".BAT", ".CMD", ".JS", ".JSE", ".WSF" etc. And of course,
since none of those files exist, Excel just opens with an error each time. This
only occurs when I launch Excel by double-clicking a .xlsx file in the GNOME
file browser. This seems to suggest it's something related to the MIME entry
wine creates for it.

Here is the relevant line from
~/.local/share/applications/wine-extension-xlsx.desktop :

Exec=env WINEPREFIX="/home/akash/.msoffice" wine start /ProgIDOpen
Excel.Sheet.12 %f

Workaround is to remove "/ProgIDOpen Excel.Sheet.12" from this line.