https://appleinsider.com/articles/19/12/05/macbook-pro-popping-sound-bug-returns-in-new-16-inch-model

Cue the hand-wringing in 3, 2, 1… 😦

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Update (December 6): https://www.macrumors.com/2019/12/06/apple-plans-fix-16-inch-macbook-pro-popping-sound/