[Bug 59569] New: `AutoSize` not correctly calculated for framed labels

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59569

            Bug ID: 59569
           Summary: `AutoSize` not correctly calculated for framed labels
           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 80625
  --> http://bugs.winehq.org/attachment.cgi?id=80625
Screenshots [Windows 11 Textscale 100%], [Windows 11 Textscale 125%], [Mono
Debian WSL],  [Mono Ubuntu]

With certain combinations of font sizes, `Label` as well as
`ToolStripStatusLabel` do not correctly calculate `AutoSize` if label is framed
with `BorderStyle.Fixed*`, `Border3DStyle.Raised*` or `Border3DStyle.Sunken*`.

Issue can be worked around by manually increasing the dimensions by 2 pixels,
i.e. either `AutoSize` does not correctly take framing into account. Or even
more likely, `AutoSize` has an issue with measuring and rounding font size,
e.g. `Math.Round()` rather than `Math.Ceil()`.

The attached .zip contains screenshots demonstrating the issue:
 - Windows 11 .NET Framework 4.8 => all fine.
 - Debian 12 with Mono 6.12.0 => issues with Deja Vu Sans Mono 9.
 - Ubuntu 24 with Mono 6.12.0 => issues with Noto Sans 11.25.

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