Bug 51092 [reconciling] JavaMultiPassReconciler removes annotations
I20040130 + plug-in export Open a CU which has errors and warnings. Observe: the annotations in overview and annotation ruler are quickly visible and then get removed. This is caused by JavaMultiPassReconciler.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/text/JavaSourceViewerConfiguration.java
final IReconcilingStrategy strategy= new SpellReconcileStrategy(editor, getConfiguredDocumentPartitioning(sourceViewer), PreferenceConstants.getPreferenceStore());
			reconciler.addReconcilingStrategy(strategy, IJavaPartitions.JAVA_DOC);
			reconciler.addReconcilingStrategy(strategy, IJavaPartitions.JAVA_MULTI_LINE_COMMENT);
			reconciler.addReconcilingStrategy(strategy, IJavaPartitions.JAVA_SINGLE_LINE_COMMENT);
			reconciler.addReconcilingStrategy(new JavaReconcilingStrategy(editor), IDocument.DEFAULT_CONTENT_TYPE);
			reconciler.setIsIncrementalReconciler(false);
			reconciler.setProgressMonitor(new NullProgressMonitor());
			reconciler.setDelay(500);
			return reconciler;
		}
		return null;
	}
	/*
	 * @see SourceViewerConfiguration#getAutoIndentStrategy(ISourceViewer, String)
	 */
	public IAutoIndentStrategy getAutoIndentStrategy(ISourceViewer sourceViewer, String contentType) {
		if (IJavaPartitions.JAVA_DOC.equals(contentType) ||
				IJavaPartitions.JAVA_MULTI_LINE_COMMENT.equals(contentType))
			return new JavaDocAutoIndentStrategy(getConfiguredDocumentPartitioning(sourceViewer));
		else if (IJavaPartitions.JAVA_STRING.equals(contentType))
			return new JavaStringAutoIndentStrategy(getConfiguredDocumentPartitioning(sourceViewer));
		return new JavaAutoIndentStrategy(getConfiguredDocumentPartitioning(sourceViewer));
	}
	/*
	 * @see SourceViewerConfiguration#getDoubleClickStrategy(ISourceViewer, String)
	 */
	public ITextDoubleClickStrategy getDoubleClickStrategy(ISourceViewer sourceViewer, String contentType) {
		if (IJavaPartitions.JAVA_DOC.equals(contentType) ||
				IJavaPartitions.JAVA_MULTI_LINE_COMMENT.equals(contentType) ||
				IJavaPartitions.JAVA_SINGLE_LINE_COMMENT.equals(contentType))