I've just added a pic and comment to the tweet FWIW.
As i have put i have never received a reply to my emails to customer service so that alone is not great. I haven't chased them or my dealers (who knew of the issue after looking at mine and finding there demo car also had it) and why should I, but i hoped the volume of others who have raised it - and some who had varying replies - would have helped get the message through.
The bulge may not be a massive problem but with the recent very wet and now very cold weather i'd feel a lot better driving without the gaping hole!