I have just upgraded to v3.0 and all the accented characters in my posts and pages have been changed to codes making a nonsense of the entries, e.g.
cafés to cafÃ©s
São Pedro de Balsemão to SÃ£o Pedro de BalsemÃ£o
crème to crÃ¨me
Buçaco to BuÃ§aco
Is there a fix for this or do I need to restore the backup and revert to 2.9?