Agreed, using some modes, I can see the mode in real time, but the resulting photo simply looks "normal", i.e., without the effect (mode) applied
I have been having this exact same issue on my S21+ since February 8. A reboot fixes it but only for about two hours maximum. I even did a factory reset and that did not help either. I am hoping that Samsung addresses this soon.
Interesting. What update did you get? Do you know the your current camera version. I got an update yesterday and the camera was updated to version 11.0.02.63. Unfortunately that update did not fix this issue. I have an S21+ on Verizon.