Lots of bugs with the June update it seems.
1. Fingerprint icon gone for some
2. Nightmode gone or not working as intended.
3. Now you say issues with camera assistant.
I mean I can only suggest a wipe cache and repair apps when in the same menu and see if it helps the cause.
Also keep checking for app updates in both Samsung and Google store.
Best of luck.
"WI-FI went down for five minutes, so I had to talk to my family.
They seem like nice people"