Thanks for the answer, but I'm sad that my phone loses functions. I bought Note 9 first of all for cameras features, and I am dissatisfied that Samsung steals functionality of the device for which I paid money.
SAME ISSUE HERE MATE. THE DEVELOPER DESERVES A SACK IN WHICH THEY REMOVED RECORD BUTTON FROM PRO MODE. THATS THE WHOLE PURPOSE OF PRO MODE TO GET PROFESSIONAL VIDEOS MADE. WE WANT THE RECORD BUTTON BACK!