BTW I tried that Textra & it seems to be working for assigning notification sounds per contact. Just downloaded it lastnight so haven't had time to really mess with it.
But yeah, I hope they fix that with an asap update.
I still have my S6 but it got dropped & now it has black screen of death.
Everything is working as I can hear chirps & beeps & led notifications. But I loved the fact it had an ir blaster