ArgumentOutOfRangeException on Container.CollectChildren

[pkujhd]

RichTextField/TextField在OnUpdate的时候触发了OnSizeChanged, 到上层需要BatchUpdate的节点执行SetRenderingOrder时，因为此时的_textChanged是true, 所以会在
Rect rect = child.GetBounds(initiator);
时触发EnsureSizeCorrect()，将所有的同级节点都移除，导致

            int count = _children.Count;
            for (int i = 0; i < count; i++)

count发生了变化，但是这里的值时旧的，会 throw OutOfRange Exception

ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
System.Collections.Generic.List`1[T].get_Item (System.Int32 index) (at <31687ccd371e4dc6b0c23a1317cf9474>:0)
FairyGUI.Container.CollectChildren (FairyGUI.Container initiator, System.Boolean outlineChanged) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:945)
FairyGUI.Container.CollectChildren (FairyGUI.Container initiator, System.Boolean outlineChanged) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:970)
FairyGUI.Container.CollectChildren (FairyGUI.Container initiator, System.Boolean outlineChanged) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:970)
FairyGUI.Container.CollectChildren (FairyGUI.Container initiator, System.Boolean outlineChanged) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:970)
FairyGUI.Container.DoFairyBatching () (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:882)
FairyGUI.Container.CollectChildren (FairyGUI.Container initiator, System.Boolean outlineChanged) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:967)
FairyGUI.Container.CollectChildren (FairyGUI.Container initiator, System.Boolean outlineChanged) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:970)
FairyGUI.Container.DoFairyBatching () (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:882)
FairyGUI.Container.SetRenderingOrder (FairyGUI.UpdateContext context) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:851)
FairyGUI.Container.Update (FairyGUI.UpdateContext context) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:828)
FairyGUI.Container.Update (FairyGUI.UpdateContext context) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:814)
FairyGUI.Container.Update (FairyGUI.UpdateContext context) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:814)
FairyGUI.Container.Update (FairyGUI.UpdateContext context) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:814)
FairyGUI.Container.Update (FairyGUI.UpdateContext context) (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Container.cs:814)
FairyGUI.Stage.InternalUpdate () (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/Stage.cs:768)
FairyGUI.StageEngine.LateUpdate () (at ./Library/PackageCache/fairygui/Runtime/Scripts/Core/StageEngine.cs:28)