Can you spot the bug in this flags enumeration?
[Flags]
public enum ItemCoreChangeType
{
ViewStyleChanged = 1,
VaryByStructureChanged = 2,
LayersChanged = 4,
LayerContentsChanged = 8,
PropertiesChanged = 16,
ErrorsChanged = 32,
ChangeHistoryCleared = 64,
EditableCommentChanged = 128,
NeedsValidation = 256,
AffectsPropertyChangeHistory = 512,
AffectsLayerChangeHistory = 1024,
PushFormatters =