Remove null character at end of pasted string

[willplatt]

When copying text from Microsoft Word on Windows and pasting into a RichTextFX text field or text area there is always a null character (code point 0) at the end of the pasted text. getText().getBytes(UTF_8) shows a single 0 byte and using arrow keys in the text field/area suggests there is a single invisible character.

This doesn't happen when pasting into a standard JavaFX TextField or TextArea, or when pasting into various non-Java applications.

I have only observed this issue when copying from Microsoft Word, but according to this, it's Windows-related, and there may even be multiple null characters, although I haven't observed this.

Expected behaviour: When a string is pasted there should be no null characters at the end of the string.
Actual behaviour: There is a null character at the end of the string.
Environment info: RichTextFX 0.11.2, Windows 10, Java 17 and 22. Tested with StyleClassedTextArea and StyleClassedTextField.

Workaround: Is there a clean way to edit the text being pasted, preferably before it's inserted?
I figured out this way to do it by overriding the paste() method, but I'm not sure if it will cause problems for pasting formatted text:

@Override
public void paste() {
	Clipboard clipboard = Clipboard.getSystemClipboard();
	if (clipboard.hasString()) {
		String str = clipboard.getString();
		if (str != null && str.endsWith("\u0000")) {
			replaceSelection(str.replaceAll("\u0000+\\Z", ""));
			return;
		}
	}
	super.paste();
}