[Bug 50676] New: Unicode characters do not display in Dialog boxes

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50676

Bug ID: 50676
           Summary: Unicode characters do not display in Dialog boxes
           Product: Wine
           Version: 6.0
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 69392
  --> https://bugs.winehq.org/attachment.cgi?id=69392
Screenshot of how the dialog looks in Wine

I have a program which uses the CreateDialog macro to create a dialog from a
template specified in a resource script.

The resource file uses japanese text, and while both menus and window titles
display correctly, dialog elements do not, simply replacing all japanese
characters with '?'.

A screenshot of how the dialog looks on Windows 10 with the system language set
to English:
https://cdn.discordapp.com/attachments/698182658890399794/811269580831719445...

The program uses the -A APIs, and has a manifest setting the default code page
to UTF-8, as described here:
https://docs.microsoft.com/en-us/windows/uwp/design/globalizing/use-utf8-cod...

I also tried recompiling the program to use CreateDialogW instead, but it made
no difference.