--- a/src/primitives.cpp	Sat Sep 05 23:03:24 2015 +0300
+++ b/src/primitives.cpp	Sat Sep 05 23:55:06 2015 +0300
@@ -637,7 +637,7 @@
 		 << LDSpawn<LDBFC> (BFCStatement::CertifyCCW)
 		 << LDSpawn<LDEmpty>();
 
-	document->setImplicit (false);
+	document->openForEditing();
 	document->history()->setIgnoring (false);
 	document->addObjects (objs);
 	document->addObjects (MakePrimitive (type, segs, divs, num));