Yes...I updated as soon I got the phone....did not think I had to root it to get photochrome cam....
Hrmm, okay. So you are on latest firmware? Try asking here: https://forum.xda-developers.com/oneplus-8-pro/how-to/oneplus-8-pro-repo-oxygen-os-builds-t4084315 there are some downgrade zips. Unfortunately I have not tried rooting at latest version or downgrading. If you find out how please post it for other users. Thanks
I am on 10.5.10 IN2020 for get this feature again
just install https://www.apkmirror.com/wp-content/themes/APKMirror/download.php?id=1341422
new camera apk