Fix true/false redraw blocking bug in synchronizer

Fixes #658

diff --git a/src/extras/synchronizer.js b/src/extras/synchronizer.js
index 78efbcb..dd4329c 100644 (file)
--- a/src/extras/synchronizer.js
+++ b/src/extras/synchronizer.js
@@ -170,7 +170,7 @@ function attachZoomHandlers(gs, syncOpts, prevCallbacks) {
         }
         block = false;
       }
-    }, false /* no need to redraw */);
+    }, true /* no need to redraw */);
   }
 }
 
@@ -213,7 +213,7 @@ function attachSelectionHandlers(gs, prevCallbacks) {
         }
         block = false;
       }
-    });
+    }, true /* no need to redraw */);
   }
 }