SOLVED: As I mentioned above, my MacBook Pro 2017 13” had the same issue. This week I scheduled a repair in a AASP so they checked my model was in a quality program (recall) for both screen and keyboard. My warranty has past 6 months but they covered the replace of both lid and top case (with battery) anyway with no cost partly under extended warranty. Now I'm waiting for my almost brand new MacBook Pro comming from repair. I suggest everyone with the same issue to find a AASP as soon as possible. For those who already paid for the repair, I suggest to try a refund from Apple.

Same. 4 months after the end of warranty. I contacted Apple Support to claim a warranty exception so they said this problem is not one which Apple will consider an exception. They also said in future Apple can consider a refund if they confirm the range of the problem, for now the only thing I can do is repairing for myself and spend a lot of money.