diff --git a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.java b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.java
index c3047fc..f42edd1 100644
--- a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.java
+++ b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.java
@@ -51,12 +51,11 @@ public enum GtkEnvBackend implements LauncherEnv.EnvBackend { //TODO test
             Box box = dialog.contentArea;
             box.append(new Label(details));
             Entry entry = new Entry();
-            Editable entryEditable = (Editable) entry;
-            entryEditable.text = defaultValue;
+            entry.text = defaultValue;
             box.append(entry);
             dialog.addButton(I18n.get("ok"), ResponseType.OK.getValue());
             dialog.addButton(I18n.get("cancel"), ResponseType.CANCEL.getValue());
-            dialog.onResponse(processResponses(dialog, () -> ok.accept(entryEditable.text.toString()), cancel));
+            dialog.onResponse(processResponses(dialog, () -> ok.accept(entry.text), cancel));
             dialog.show();
         });
     }
diff --git a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/control/InstanceGridEntryFactory.java b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/control/InstanceGridEntryFactory.java
index 52bf2fa..1e9652f 100644
--- a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/control/InstanceGridEntryFactory.java
+++ b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/control/InstanceGridEntryFactory.java
@@ -65,7 +65,7 @@ public class InstanceGridEntryFactory extends SignalListItemFactory {
             ListItem li = (ListItem) item;
 
             Box box = (Box) li.getChild();
-            InstanceThumbnail thumbnail = (InstanceThumbnail) box.firstChild;
+            InstanceThumbnail thumbnail = InstanceThumbnail.castFrom((Stack) box.firstChild);
             Label label = (Label) thumbnail.nextSibling;
 
             Instance instance = instanceList.get(((ListIndexItem) li.getItem()).getIntValue());
diff --git a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/util/ListIndexModel.java b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/util/ListIndexModel.java
index 9534ec8..0cc0852 100644
--- a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/util/ListIndexModel.java
+++ b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/util/ListIndexModel.java
@@ -62,9 +62,11 @@ public class ListIndexModel extends GObject implements ListModel {
     }
 
     public void setSize(int size) {
+        int oldSize = getNItems();
         getMemoryLayout()
                 .varHandle(MemoryLayout.PathElement.groupElement("size"))
                 .set(MemorySegment.ofAddress((MemoryAddress) handle(), getMemoryLayout().byteSize(), MemorySession.openImplicit()), size);
+        itemsChanged(0, oldSize, size);
     }
 
     @Override
diff --git a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/window/MainWindow.java b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/window/MainWindow.java
index 301d2e8..fcc910d 100644
--- a/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/window/MainWindow.java
+++ b/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/window/MainWindow.java
@@ -149,7 +149,7 @@ public class MainWindow extends ApplicationWindow {
         try {
             instanceList.clear();
             instanceList.addAll(InstanceList.ordered());
-            instanceListIndex.setSize(instanceList.size());
+            instanceListIndex.size = instanceList.size();
 
             if (InstanceList.isEmpty) stack.visibleChild = empty;
             else if (InceptumConfig.listView) stack.visibleChild = listView;