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    Type:Bug 
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    Resolution: Fixed
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    Priority:Unknown 
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    Affects Version/s: None
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    Component/s: None
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        Rust Drivers
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        Not Needed
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See this user issue for the initial bug report: https://github.com/mongodb/mongo-rust-driver/issues/1332
The crux of the problem is that getMore uses a SelectionCriteria::Predicate to select a specific server address, and when we evaluate predicates we also check whether the server is data-bearing, which excludes hidden members.