BUG: Delete an item in the LevelSequencer would cause wrong result

In Level Sequence , If My Language Of UE4 Has Been set to Chinese(Simplified China), there would be error result when i want to delete an subitem ,it would be delete all the subitems

such as i want to delete the location under the transform, all subitems would be delete under the transform.

But if the language of UE4 is English, the wrong result would not be caused

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