I started using the latest daily build and noticed something wrong. I've setup a simple scene with a shadow catcher to use as an environment as I add Corona materials to my 3D cars. All of a sudden, the Sky Object is rendering when I've set it to NOT be seen by Camera. I know this because the Background Object no longer renders at all, thus revealing the HDR in the background. I'll be uploading a scene after I post this.
As you can see in my image here, the render in the top-right is correct. The image in the bottom-right is the exact same scene with no changes, but rendered with daily build January 22.
A simple workaround is I put a curved studio object (floor that curves up behind my objects) and applied my shadow catcher material. This renders as expected.
Build timestamp: Jan 22 2021 18:59:59
Version: 7.0 daily Jan 22 2021
Cinema version: R20.059 CINEMA 4D Studio