Graphics DrawString behavies different in higher versions of iOS?

[ljzj2]

Description

I use UIGraphics in iOS to drawString and it is different between lower and higher versions of iOS

in higher than ios17 it is different or seems that
gra.SetShouldAntialias(false); gra.SetShouldSmoothFonts(false);
is not working.

Steps to Reproduce

1.Create .net mAUI project
2. open MainPage and then add an Image and an Button.
3. if you click the button then create UIGraphics and then set imageResource to the image

this is the code:

UIGraphics.BeginImageContext(new CGSize(309, 60));

var gra = UIGraphics.GetCurrentContext();
gra.FillRect(new CGRect(0, 0, 309, 60));
gra.SetTextDrawingMode(CGTextDrawingMode.Fill);
gra.SetFillColor(UIColor.FromRGB(255, 255, 255).CGColor);

gra.SetShouldAntialias(false);
gra.SetShouldSmoothFonts(false);

var attributedString = new NSAttributedString(str, new CTStringAttributes
{
    Font = Font.ToCTFont(fontSize),
    ForegroundColor = UIColor.FromRGB(255, 255, 255).CGColor
});
attributedString.DrawString(new CGRect(0, 0, 309, 60));
img = gra.AsBitmapContext().Data;
UIGraphics.EndImageContext();

var image = UIGraphics.GetImageFromCurrentImageContext();

var file = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "/origin.jpg";
var res = image.AsJPEG().Save(file, true);
image.Source = ImageSource.FromFile(file);

Link to public reproduction project repository

No response

Version with bug

8.0.100 SR10

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

No

Relevant log output

[jfversluis]

Can you please verify you also see this on .NET 9?

[Ying-6]

Could you provide us with a sample project so we can investigate it further? Looking forward to your reply!

[StephaneDelcroix]

/cc @rolfbjarne