Weeeeell I opened a ticket on zendesk, but since my phone is from 2014 I doubt it's covered by any warranty. And the Jolla C is (hopefully) on its way, so I'd rather use my device as a 'cavy' to help posterity which may stumble upon such issue (and since you too had it it may not be that uncommon, unluckily) - and if it works I'll have a secondary phone to continue my programming tests and community will have a fix