Groupbox incorrectly scale on the high DPI devices when AutoScaleMode is set to DPI

.NET version

.Net 6

Did it work in .NET Framework?

Yes

Did it work in any of the earlier releases of .NET Core or .NET 5+?

No

Issue description

The WinForm dialog display incorrectly in the high DPI(>100%) see the screenshot: This is the correct display: But if I add a Font = Font or Scale(new SizeF(1.0F,1.0F)) to the end of InitializeComponent, we can get the right display again:

So why do I need the extra code to make it display correctly? We just migrated our code to .net 6 from .net 4.8. There are no these situations on the .net framework 4.8. Did we have any solution to handle this on the high DPI?

Steps to reproduce

Create a new WinForm project (.net 6) Use a groupbox, and fill in some checkboxes. Set the dialog’s AutoScaleMode to Dpi. Building. Set the system Scale to 200% (system settings ->Display -> Scale and layout). Open the new exe.

[Amy-Li03]

@dreddy-work verified the sample DocumentDriller in .NET 8.0 latest build 8.0.100-rc.1.23401.24, for both DPI and Font modes on 100% & 300% DPI, at run time, the ComboBox display well as it was in design time. Following is the repro video: Test app: WinFormsApp57.zip

[dreddy-work]

@hmisaki, Our objective is to enhance the overall user experience in .NET Core when utilized with high DPI devices. This is particularly relevant for SystemAware (default mode) applications, and it aligns with the priority of our ongoing work in WinForms. Regarding the release schedule, I will provide an update once we complete the initial investigation and have a clear understanding of the extent of the required fix.