Bug 38499 Source Hover oszillates
I20030604 MacOS 10.2.6 - in Java Editor preferences configure source hover to activate without pressing a modifier key - activate source hover and stop moving the mouse Observe: after two seconds the hover disappears and reappears a second later; this oszillates indefinitetly
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/hover/SourceViewerInformationControl.java
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 * All rights reserved. This program and the accompanying materials 
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 * Contributors:
 *     IBM Corporation - initial API and implementation
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package org.eclipse.jdt.internal.ui.text.java.hover;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.graphics.Color;