Index: src/org/openstreetmap/josm/gui/dialogs/ChangesetDialog.java
===================================================================
--- src/org/openstreetmap/josm/gui/dialogs/ChangesetDialog.java	(revision 19056)
+++ src/org/openstreetmap/josm/gui/dialogs/ChangesetDialog.java	(working copy)
@@ -531,7 +531,7 @@
                 task = null;
                 future = null;
             } else {
-                task = new ChangesetHeaderDownloadTask(toDownload);
+                task = new ChangesetHeaderDownloadTask(MainApplication.getMainFrame(), toDownload, true);
                 future = MainApplication.worker.submit(new PostDownloadHandler(task, task.download()));
             }