[Bug 47009] New: msi x64 app cannot be uninstalled

https://bugs.winehq.org/show_bug.cgi?id=47009

Bug ID: 47009
           Summary: msi x64 app cannot be uninstalled
           Product: Wine
           Version: 4.6
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msi
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

An msi x64 app cannot be uninstalled. This is a regression bug which came in
with Wine-4.6. Uninstalling a x64 app with Wine-4.5 has worked fine.

Repro
- install x64 demo app from the att. of bug 46846 "notation player 4"
- start "wine uninstaller" in a shell window
- select "notation player 4"
- Press button Change/deinstall

Problem:
The msi installer does not uninstalls the app but starts installing the app a
second time. After completing this second installation and trying to uninstall
this app again buts the button "Change/Uninstall" into grey.
An x64 app cannot be uninstalled at all.

The uninstallation of a 32 bit app works fine.