Sounds like the plastic they use had some problem. I don't represent Jolla and I have no idea about original production, but sounds rather like the original small batch of J Tabs are kind of pre-production PVT devices. (Was only about 1K that was produced) We will make sure the MP devices uses the better plastic.
I would like to see the tablet with Gorilla glass no mattering if it is version 1 or OGS glass, is import to prevent ugly scratches.