Bug 42587 Left over from content assist
M3 - set preference that content assist should overwrite - open content assist on some word so that the rest of the word is indicated to be overwritten - transfer focus to the content assist widget using TAB - Esc -> overwrite indication is still there
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/link/contentassist/CompletionProposalPopup2.java
fInserting= false;
		}
	}
	
	/**
	 * Returns whether this popup has the focus.
	 * 
	 * @return <code>true</code> if the popup has the focus
	 */
	public boolean hasFocus() {
		if (Helper2.okToUse(fProposalShell))
			return (fProposalShell.isFocusControl() || fProposalTable.isFocusControl());
		return false;
	}
	
	/**
	 * Hides this popup.
	 */
	public void hide() {
		if (fDocumentListener != null) {
			IDocument document= fViewer.getDocument();
			if (document != null)
				document.removeDocumentListener(fDocumentListener);
			fDocumentListener= null;
		}
		fDocumentEvents.clear();		
		StyledText styledText= fViewer.getTextWidget();
		if (fKeyListener != null && styledText != null && !styledText.isDisposed())
			styledText.removeKeyListener(fKeyListener);
		if (Helper2.okToUse(fProposalTable)) {