Index: /trunk/src/org/openstreetmap/josm/gui/layer/geoimage/ImageViewerDialog.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/layer/geoimage/ImageViewerDialog.java	(revision 18933)
+++ /trunk/src/org/openstreetmap/josm/gui/layer/geoimage/ImageViewerDialog.java	(revision 18934)
@@ -180,5 +180,5 @@
         this.layers.getModel().addChangeListener(l -> {
             // We need to check to see whether or not the worker is shut down. See #22922 for details.
-            if (!MainApplication.worker.isShutdown()) {
+            if (!MainApplication.worker.isShutdown() && this.isDialogShowing()) {
                 MainApplication.worker.execute(() -> GuiHelper.runInEDT(() -> {
                     Component selected = this.layers.getSelectedComponent();
@@ -189,4 +189,13 @@
             }
         });
+    }
+
+    @Override
+    public void showNotify() {
+        super.showNotify();
+        Component selected = this.layers.getSelectedComponent();
+        if (selected instanceof MoveImgDisplayPanel) {
+            ((MoveImgDisplayPanel<?>) selected).fireModelUpdate();
+        }
     }
 
@@ -930,5 +939,5 @@
         if (!isDialogShowing()) {
             setIsDocked(false); // always open a detached window when an image is clicked and dialog is closed
-            showDialog();
+            unfurlDialog();
         } else if (isDocked && isCollapsed) {
             expand();