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Getting UserWarning: Test/Validation dataset column 'browser_name' has levels not trained on: [Android, Midori, Opera Mini, Other] for H2O GBM model

I trained a H2O GBM model (H2O version 3.22.0.1) using many categorical columns but when i try to predict on test data it is giving me warnings for unknown categorical levels in test. Does H2O GBM not handle then unseen categorical levels automatically? or is there a specific version where this capability is added?