I recently updated my S10+ on ATT to the June update and since then, the camera has been having trouble auto focusing on subjects. Using the camera app and even third party apps like Snapchat, it takes a few seconds for the camera to focus compared to almost instantly getting focused before.
Same. I thought it was just Snapchat but then I noticed it with the stock camera app a few weeks later. Hopefully this gets fixed in the next update. Very annoying. S10 (non-plus), Verizon branded.