diff -r 100f018096c8 -r bf7336731981 src/Pure/PIDE/document.scala
--- a/src/Pure/PIDE/document.scala	Tue May 29 20:03:24 2018 +0200
+++ b/src/Pure/PIDE/document.scala	Tue May 29 22:25:59 2018 +0200
@@ -921,6 +921,13 @@
       }
     }
 
+    def node_initialized(version: Version, name: Node.Name): Boolean =
+      name.is_theory &&
+      (version.nodes(name).commands.iterator.find(_.potentially_initialized) match {
+        case None => false
+        case Some(command) => command_states(version, command).headOption.exists(_.initialized)
+      })
+
     def node_consolidated(version: Version, name: Node.Name): Boolean =
       !name.is_theory ||
         version.nodes(name).commands.reverse.iterator.