ADDITIONAL SYSTEM INFORMATION :
Tested on macOS 13.4.1. Tested Eclipse Temurin 17, 20 and 21.

A DESCRIPTION OF THE PROBLEM :
Calling Clipboard#setClipboard with a Transferable that includes an image DataFlavor on macOS causes TIFF image data to be used for all image content types. This means that if an app reads the data with the type NSPasteboardTypePNG, it actually gets TIFF image data. This doesn't seem to be a problem for most apps since TIFF seems to be preferred. However, some apps like Google Chrome (and other chromium based products) now prefer PNG data if available: https://chromium.googlesource.com/chromium/src/+/9c68c5e72656809e0b350187a12b0a0267a20428. This results in these pasted images failing to load/render.

Code analysis:
CClipboard#setContentsNative calls DataTransferer.getInstance().translateTransferable(...) which eventually reaches CDataTransfer#imageToPlatformBytes. However, this function ignores the passed format and calls CImage.getCreator().getPlatformImageBytes(image), which always converts the image to TIFF through the native part of CImage.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Place the test code in a folder along with a PNG file named "test.png". This PNG file can be any valid PNG file.
2. Execute the test code: java ImageClipboardTest.java
3. Observe the contents of the clipboard. I did this using https://madebyevan.com/clipboard-test/ in various browsers.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The image on the clipboard correctly appears in all situations.
ACTUAL -
On Safari and Firefox, the image correctly appears. On Chrome, the image does not appear.

---------- BEGIN SOURCE ----------
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class ImageClipboardTest {

    public static void main(String[] args) throws Exception {
        BufferedImage bi = ImageIO.read(new File("test.png"));

        Toolkit.getDefaultToolkit().getSystemClipboard().setContents(new ImageTransferable(bi), null);
    }

    public static class ImageTransferable implements Transferable {
        private final BufferedImage image;

        public ImageTransferable(BufferedImage image) {
            this.image = image;
        }

        @Override
        public DataFlavor[] getTransferDataFlavors() {
            return new DataFlavor[] {DataFlavor.imageFlavor};
        }

        @Override
        public boolean isDataFlavorSupported(DataFlavor flavor) {
            return flavor == DataFlavor.imageFlavor;
        }

        @Override
        public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
            if (flavor != DataFlavor.imageFlavor) throw new UnsupportedFlavorException(flavor);
            return image;
        }
    }

}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Not using the AWT apis for clipboard, and instead using NSPasteboard directly through JNI/JNA.

FREQUENCY : always