Bug 39995 [navigation] Forward history cleared after going back in navigation history
build I20030710 - select a method call to a method in the same class - hit F3 to open the declaration - use the back buttons to go back to the call site - the forward history gets cleared shortly thereafter, making it more difficult to get back to the declaration Seems to only occur for navigations within the same file.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
public void paintControl(PaintEvent event) {	
			if (fActiveRegion == null)
				return;
	
			ISourceViewer viewer= getSourceViewer();
			if (viewer == null)
				return;
				
			StyledText text= viewer.getTextWidget();
			if (text == null || text.isDisposed())
				return;
				
				
			int offset= 0;
			int length= 0;
			if (viewer instanceof ITextViewerExtension3) {
				
				ITextViewerExtension3 extension= (ITextViewerExtension3) viewer;
				IRegion widgetRange= extension.modelRange2WidgetRange(new Region(offset, length));
				if (widgetRange == null)
					return;
					
				offset= widgetRange.getOffset();
				length= widgetRange.getLength();
				
			} else {
				
			IRegion region= viewer.getVisibleRegion();			
			if (!includes(region, fActiveRegion))
			 	return;