I can't remember if I already mentioned, but I'd noticed some delamination on my Hammerhead Karoo and then also saw someone on Reddit mention the same thing.
I contacted support and they said 'Send it back, we'll replace it' even though it was out of warranty, which I think is pretty good. But, I was off to Spain, so asked if I could do it after.
Spain went fine, I went for a ride on Sunday though and after only about 5k...
Erm... it was still beeping away, so I took it off and put it in a back pocket, in case of rain and didn't touch anything. At the end of the ride, I could remember the sequence of button presses to end the ride, and it synced as normal. I've just now sent it back
I contacted support with the postage details (they paid), and they've ordered me a new one already. So, whilst it's not great that after 2½ years the screen fell off, it's been pretty good customer service! Maybe I'll even have the replacement in time for the weekend's rides.