Sprites always have costume data now

src/components/sprite-selector/sprite-selector.jsx

@@ -17,8 +17,6 @@ const SpriteSelectorComponent = function (props) {
             {...componentProps}
         >
             {Object.keys(sprites)
-                // Only render ready sprites
-                .filter(id => 'costume' in sprites[id] && 'order' in sprites[id])
                 // Re-order by list order
                 .sort((id1, id2) => sprites[id1].order - sprites[id2].order)
                 .map(id => (

src/components/target-pane/target-pane.jsx

@@ -50,7 +50,7 @@ const TargetPane = function (props) {
                 backdropCount={stage.costumeCount}
                 id={stage.id}
                 selected={stage.id === editingTarget}
-                url={stage.costume && stage.costume.skin}
+                url={stage.costume.skin}
                 onSelect={onSelectSprite}
             />
             <p className={styles.targetPaneLibraryButtons}>