With the complexity of modern software bits across all makes and models it takes vast amounts of testing to work out bugs. One unforeseen input can can create a cascade failure. When a glitch is discovered an update does not happen overnight. Look at the fogging issues with the Velar, all sort of assumptions were made across various forums and when real info was finally compiled it was two handed. Weak recirc door arms and a software glitch that compounded it. With every new model, face lift or new tech release there are a few rigs that have bugs. Like it or not is part of being a first adopter. Is it a pain the back side? of course it is.
Bluesurf, it is not a crisis, it will not "ruin" the brand. When BMW, you know the brand that every compares RR to, made their production changes to the second gen P38s there were many bugs. When they designed the first gen L322 they screwed up big and out of the gate Ford had to deal with insipid front diff failures that BMW designed. This resulted in a full NTSB safety recall and millions spent to rectify BMWs poor design. BMW VANOS failures and a cooling system that fried trannies prematurely thanks the "sealed for life" marketing followed.
This is a pretty big stumbling block that has happened to only a portion of L405 deliveries. That shows that it is limited by a glitch in a particular version of software. Is it an older version? It the latest version? Was something else changed in production? it will be fixed, it will take time but it does not effect every single face lift model.