I'm not sure this is a bug, but perhaps a misuse of the Store. But if ListStore.insert(..) is called while the base class Store is currently filtering (filtersEnabled==true), the next time filters are applied will remove them (see Store.applyFilters).

I worked around this by adding a method to Store that handles adding items to "all" and changed ListStore to call this method when inserting items.

Store.java:
Code:
protected void insertItems(List<M> items, int index) {
      if (filtersEnabled) {
          all = snapshot;
          all.addAll(index, items);
          snapshot = all;
      } else {
          all.addAll(index, items);
      }
}
ListStore.java:
Code:
protected void insert(List<M> items, int index, boolean supressEvent) {
    insertModels(items, index);
    for (M m : items) {
      registerModel(m);
    }
    if (!supressEvent) {
      StoreEvent evt = createStoreEvent();
      evt.models = items;
      evt.index = index;
      fireEvent(Add, evt);
    }
}
I forgot about the remove method. But there are other methods in Store that would need to be updated as well. Any that affect the "all" property.