Index: trunk/src/org/openstreetmap/josm/Main.java
===================================================================
--- trunk/src/org/openstreetmap/josm/Main.java	(revision 11091)
+++ trunk/src/org/openstreetmap/josm/Main.java	(revision 11092)
@@ -81,4 +81,5 @@
 import org.openstreetmap.josm.gui.layer.MainLayerManager;
 import org.openstreetmap.josm.gui.layer.OsmDataLayer.CommandQueueListener;
+import org.openstreetmap.josm.gui.layer.TMSLayer;
 import org.openstreetmap.josm.gui.preferences.ToolbarPreferences;
 import org.openstreetmap.josm.gui.preferences.imagery.ImageryPreference;
@@ -101,4 +102,5 @@
 import org.openstreetmap.josm.tools.OpenBrowser;
 import org.openstreetmap.josm.tools.OsmUrlToBounds;
+import org.openstreetmap.josm.tools.OverpassTurboQueryWizard;
 import org.openstreetmap.josm.tools.PlatformHook;
 import org.openstreetmap.josm.tools.PlatformHookOsx;
@@ -528,4 +530,8 @@
                 i.get();
             }
+            // asynchronous initializations to be completed eventually
+            service.submit((Runnable) TMSLayer::getCache);
+            service.submit((Runnable) OsmValidator::initializeTests);
+            service.submit(OverpassTurboQueryWizard::getInstance);
             service.shutdown();
         } catch (InterruptedException | ExecutionException ex) {