Bug 90528 Editor icon does not show problem decoration for second instance
3.1 M6 - open a .java file that has errors or warnings - the editor tab icon has the problem decoration - Window > New Window - open the same file in the new window - the editor tab icon is missing the problem decoration
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
final char fExitCharacter;
		final char fEscapeCharacter;
		final Stack fStack;
		final int fSize;
		
		public ExitPolicy(char exitCharacter, char escapeCharacter, Stack stack) {
			fExitCharacter= exitCharacter;
			fEscapeCharacter= escapeCharacter;
			fStack= stack;
			fSize= fStack.size();
		}
		/*
		 * @see org.eclipse.jdt.internal.ui.text.link.LinkedPositionUI.ExitPolicy#doExit(org.eclipse.jdt.internal.ui.text.link.LinkedPositionManager, org.eclipse.swt.events.VerifyEvent, int, int)
		 */
		public ExitFlags doExit(LinkedModeModel model, VerifyEvent event, int offset, int length) {
			
			if (event.character == fExitCharacter) {
				
				if (fSize == fStack.size() && !isMasked(offset)) {
					BracketLevel level= (BracketLevel) fStack.peek();
					if (level.fFirstPosition.offset > offset || level.fSecondPosition.offset < offset)
						return null;
					if (level.fSecondPosition.offset == offset && length == 0)