[Bug 59570] New: `MessageBox` button text empty on Ubuntu

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59570

            Bug ID: 59570
           Summary: `MessageBox` button text empty on Ubuntu
           Product: Framework Mono
           Version: 6.12.0
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: System.Windows.Forms
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
      Distribution: ---

Created attachment 80626
  --> http://bugs.winehq.org/attachment.cgi?id=80626
Screenshots [Mono Debian WSL], [Mono Ubuntu]

`MessageBox` button text is empty on a plain Ubuntu 24. The attached .zip
contains screenshots demonstrating the issue:
 - Debian 12 with Mono 6.12.0 => all fine.
 - Ubuntu 24 with Mono 6.12.0 => empty button text.

Note the retrieved `SystemFonts` assignement:
* DefaultFont      = Noto Sans 8.25
* CaptionFont      = Noto Sans 11
* SmallCaptionFont = Noto Sans 11
* IconTitleFont    = Noto Sans 11
* MenuFont         = Noto Sans 11
* DialogFont       = Noto Sans 8.25
* MessageBoxFont   = Noto Sans 11
* StatusFont       = Noto Sans 11

Same as when using non-100% text scaling on Windows, the `DefaultFont` and
`DialogFont` remain at 100%, but the `MessageBoxFont` is larger, which could be
the underlying reason for the issue.

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