Updating feature creates duplicate rules

If you have a feature that has rules components, updating your feature will create duplicate rules. It appears to be using some sort of auto incrementing to name the rule, so if you have 2 rules in your feature (feature_1, feature_2), and then update your feature, you'll then have 4 rules in your updated feature: feature_1, feature_2, feature_3 (a duplicate of feature_1), and feature_4 (a duplicate of feature_2).

Let me know if that doesn't make sense and I'll write some 'how to replicate' instructions.