fix #6818

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

src/debug/java/com/nextcloud/client/TestActivity.kt

@@ -79,7 +79,7 @@ class TestActivity :
     }
 
     override fun showSortListGroup(show: Boolean) {
-        TODO("Not yet implemented")
+        // not needed
     }
 
     override fun showDetails(file: OCFile?) {

src/main/java/com/owncloud/android/ui/fragment/FileDetailFragment.java

@@ -348,9 +348,14 @@ public class FileDetailFragment extends FileFragment implements OnClickListener,
     public void onResume() {
         super.onResume();
 
-        if (toolbarActivity != null && previewLoaded) {
-            toolbarActivity.setPreviewImageVisibility(true);
+        if (toolbarActivity != null) {
+            toolbarActivity.showSortListGroup(false);
+
+            if (previewLoaded) {
+                toolbarActivity.setPreviewImageVisibility(true);
+            }
         }
+
     }
 
     @Override