fix missing previous order assignments

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/HabitCardListAdapter.java

@@ -83,6 +83,7 @@ public class HabitCardListAdapter
         cache.setListener(this);
         cache.setCheckmarkCount(
             ListHabitsRootViewKt.MAX_CHECKMARK_COUNT);
+        cache.setPreviousOrder(preferences.getDefaultPreviousOrder());
         cache.setOrder(preferences.getDefaultOrder());
 
         setHasStableIds(true);
@@ -331,11 +332,6 @@ public class HabitCardListAdapter
         return cache.getOrder();
     }
 
-    @Override
-    public HabitList.Order getPreviousOrder() {
-        return cache.getPreviousOrder();
-    }
-
     /**
      * Selects or deselects the item at a given position.
      *

android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/memory/MemoryHabitList.java

@@ -59,6 +59,7 @@ public class MemoryHabitList extends HabitList
         this.parent = parent;
         this.comparator = comparator;
         this.order = parent.order;
+        this.previousOrder = parent.previousOrder;
         parent.getObservable().addListener(this::loadFromParent);
         loadFromParent();
     }

android/uhabits-core/src/main/java/org/isoron/uhabits/core/preferences/Preferences.java

@@ -75,6 +75,20 @@ public class Preferences
         }
     }
 
+    public HabitList.Order getDefaultPreviousOrder() {
+        String name = storage.getString("pref_default_previous_order", "BY_POSITION");
+
+        try
+        {
+            return HabitList.Order.valueOf(name);
+        }
+        catch (IllegalArgumentException e)
+        {
+            setDefaultPreviousOrder(HabitList.Order.BY_POSITION);
+            return HabitList.Order.BY_POSITION;
+        }
+    }
+
     public void setDefaultOrder(HabitList.Order order)
     {
         storage.putString("pref_default_order", order.name());

android/uhabits-core/src/main/java/org/isoron/uhabits/core/ui/screens/habits/list/ListHabitsMenuBehavior.java

@@ -160,8 +160,6 @@ public class ListHabitsMenuBehavior
         void setPreviousOrder(HabitList.Order order);
 
         HabitList.Order getOrder();
-
-        HabitList.Order getPreviousOrder();
     }
 
     public interface Screen