I've got another tricky thing to test, aimed for all former/current N9 users.
If you have/had an N9, and used the email application, preferably with a custom IMAP4+SMTP server, preferably with dovecot as the IMAP4 server, have you noticed that email sync stops working every now and then and you have to delete the database in ~/.qmf/ to resolve it ? If so, this post is for you.

Did you manage to replicate the same issue in the Jolla? :-)