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An internal document has been leaked, revealing that Apple did indeed use a protective membrane under its new MacBook Pro keyboard to prevent dust from entering the problematic butterfly mechanism.

Apple won't be replacing your defective MacBook keyboard with the version found on its new MacBook Pros. The new keyboard features a protective membrane around its problematic butterfly mechanism.

Apple has stated that the keyboard on the new MacBook Pro lineup won't fix sticky key issues. Yet, a teardown has revealed that the new keyboard might include a measure of protection to prevent it.