Well that’s great news! I can’t test as I’ve returned the 55” but am planning to get a 65” because I really do like the picture on the TCL even with the messed up HDR thing, I just hoped they would eventually fix it....and they have apparently!
On 2020 R635 65” TCL I can confirm prime video trigger HDR but Netflix nothing. Yes I have premium subscription and I just tested connection thru Netflix settings in the app and logged in over 60 Mbps. I don’t understand what could be wrong.
Just tested Prime on TCL 65" R635 2020 and went to "The Boys Episode 8 Season 2" where I first noticed the issue and it's been fixed. HDR logo comes up right away now. Tested one other show and 1 free movie and they worked fine in HDR. Couldn't test the Marvel stuff someone mentioned still being broken because I don't own them.