diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaReconciler.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaReconciler.java
index 6d3635fb48c..ba6bf2534fc 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaReconciler.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaReconciler.java
@@ -23,6 +23,7 @@
 
 import org.eclipse.core.runtime.Assert;
 import org.eclipse.core.runtime.ICoreRunnable;
+import org.eclipse.core.runtime.OperationCanceledException;
 import org.eclipse.core.runtime.jobs.Job;
 
 import org.eclipse.core.resources.IMarker;
@@ -49,6 +50,7 @@
 import org.eclipse.ui.texteditor.ITextEditor;
 import org.eclipse.ui.texteditor.spelling.SpellingService;
 
+import org.eclipse.jdt.core.ClasspathContainerInitializer;
 import org.eclipse.jdt.core.ElementChangedEvent;
 import org.eclipse.jdt.core.ICompilationUnit;
 import org.eclipse.jdt.core.IElementChangedListener;
@@ -394,6 +396,11 @@ protected void reconcilerReset() {
 	 */
 	@Override
 	protected void initialProcess() {
+		try {
+			Job.getJobManager().join(ClasspathContainerInitializer.class, null);
+		} catch (OperationCanceledException | InterruptedException e) {
+			// Ignore
+		}
 		synchronized (fMutex) {
 			super.initialProcess();
 		}