At least you got a freebee! If you hadn’t posted here would you have known of the extended warranty? It would have cost you a bit of coin needlessly!
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=== Update (02/19/2021) ===
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Here’s your issue, it’s called FlexGate! [link|https://www.ifixit.com/News/12903/flexgate|The Design Flaw Behind MacBook Pro’s “Stage Light” Effect] and [link|https://www.ifixit.com/News/13979/apples-2018-macbook-pros-attempt-to-solve-flexgate-without-admitting-it-exists|2018 MacBook Pros Try to Solve Flexgate Without Admitting It Exists]
Any ways…. Apple has you covered!
At least you got a freebee! If you hadn’t posted here would you have known of the extended warranty? It would have cost you a bit of coin needlessly!