The issue can be reproduced by adding a RadBarCode to the form and setting its value this way:

this.radBarcode1.Value = "https://docs.telerik.com/devtools/winforms/introduction";

Workaround: set to the ForeColor to the RadBarCodeElement
this.radBarcode1.BarcodeElement.ForeColor = Color.Red;

Hello,
As part of my evaluation of your WinForms control collection, I noticed that your Barcode control lacks a DataMatrix 2D barcode. This is a very common and useful barcode that is used in production environments. We use it extensively here. What are the chances of adding DM barcodes?