diff --git a/src/org/openstreetmap/josm/gui/io/UploadDialog.java b/src/org/openstreetmap/josm/gui/io/UploadDialog.java
index 684f6906b8..5719562f73 100644
--- a/src/org/openstreetmap/josm/gui/io/UploadDialog.java
+++ b/src/org/openstreetmap/josm/gui/io/UploadDialog.java
@@ -29,10 +29,12 @@ import java.util.stream.Collectors;
 import javax.swing.AbstractAction;
 import javax.swing.BorderFactory;
 import javax.swing.JButton;
+import javax.swing.JFrame;
 import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JSplitPane;
 import javax.swing.JTabbedPane;
+import javax.swing.SwingUtilities;
 import javax.swing.border.TitledBorder;
 
 import org.openstreetmap.josm.data.APIDataSet;
@@ -354,6 +356,11 @@ public class UploadDialog extends AbstractUploadDialog implements PropertyChange
                             new Dimension(800, 600)
                     )
             ).applySafe(this);
+
+            JFrame frame = (JFrame) SwingUtilities.getAncestorOfClass(JFrame.class, this);
+            frame.revalidate();
+            frame.repaint();
+
             startUserInput();
         } else if (isShowing()) { // Avoid IllegalComponentStateException like in #8775
             new WindowGeometry(this).remember(getClass().getName() + ".geometry");