Same here, did the update and still the same.
I just contacted Nokia Support using live chat, and it looks like they aren’t aware of this issue, they told me to send the defective devices (I have 2 of them with this issue) to their repair center , the support person told me to return it to ATT, I told them I ran out of the 30 days return period , so they said "Since you are unable to get a replacement from AT&T, it would be best to send the device to our service center for assessment."
So yes, I guess they aren't aware of this and it’s not a known bug for them.