if you have AT&T (of course) and try to send or receive live messages or photos while connected to WiFi it comes out all fuzzy. Also it will not auto download. This is when using the stock samsung message app. If you switch off of wifi everything comes through fine no issues.
If youre connected to wifi and send it, you'll see it takes a while to send. If someone sends you a picture while connected to wifi you may not even get a notification it'll just be in the message thread grey waiting to download.
My girlfriend and I tested this out one evening since we both upgraded to the Note's, she has the note 10 and I have the Note 10 plus, both on AT&T
Depending on your carrier and if you have the unlocked model or not. For unlocked folks we get it last although I'm not to worried about monthly security updates.
So just dropping some good news, the patch seems to have fixed the live message issue I was having. Sent some live messages back and forth between the girlfriend and it works now when connected to wifi