Not a show-stopper bug by any means, but a minor issue to report with the camera shutter sound when taking pictures in portrait mode on 15PM on 17.2b4:
Turning on silent mode mutes the camera app's shutter sound, as normal.
With silent mode off, the phone's volume control normally controls the volume of the shutter sound when taking a picture, and in beta 4, that is true except in portrait mode. Taking a picture in portrait mode plays the shutter sound at medium volume regardless of the phone's volume setting - even if you've turned the phone's volume all the way down to zero.
Rebooting the phone doesn't fix the problem. (Well, actually, the first time I took a portrait shot after rebooting, the volume of the shutter sound was determined by the phone's overall volume setting, as normal. But on the second and subsequent portrait shots I took, the shutter volume was medium regardless of the phone's volume setting, whereas in non-portrait mode the phone's volume setting continues to determine the volume of the shutter sound.)
I'd be grateful if someone could try to replicate this issue, simply by taking a portrait mode picture with silent mode off but your phone's volume set to zero. Then take a picture in non-portrait mode. Please reply with your result, and indicate whether you're running this beta and what iPhone you have. Thank you!
I will report this in the feedback app.