I took each laptop separately to the Apple Store Genius Bar and both times the technician was able to recreate the problem and send the laptop in for repair. Each mbp has had its top board replaced i.e. new battery, new keyboard etc. Lo and behold, both computers saw the problem resume immediately after delivery.
What should I do at this point? They clearly don’t know what to do and it’s very disruptive to keep going to the store, working without my laptop, etc., but I also need to be able to charge my laptops while they’re in use.
It’s so weird to me that this same problem occurs on two separate MacBook Pros, of different generations and in unique locations. I’m confused.