.NET version

11.0.0-alpha.1.26062.101

Did it work in .NET Framework?

Not tested/verified

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

The issue can reproduce on .NET 10.0, and in .NET 9.0, the text is invisible.

Issue description

The RichTextBox not display multiline text well when setting the Enable as False in DarkMode

Steps to reproduce

1. Create a .NET Winforms project with a RichTextBox control
2. Add multiline text for the richTextBox1
3. Set the Enable as false for the richTextBox1
4. Set app under Dark mode in program.cs file
   Application.SetColorMode(SystemColorMode.Dark);
5. Build & run the application
6. Observe multiline text for the richTextBox1