I uploaded my entire catalog of photos (about 15k) to Google Photos using the Backup and Sync tool. Some images are JPG and most of them are supported RAW files (CR2 or ARW). I noticed yesterday that my Google Drive filled up.
I emptied my trash and noticed that some files, that were only to be synced with Google Photos, were added within my drive. They were added under Computers > My Macbook Pro > all of my files. I deleted that entire directory and re-synced my Google Photos. That drive was added back under "Computers". After the process completed, I looked at my quota and noticed that some photos were added to my Google Drive and were taking up space while others within the same directory were not taking up any space.
I'd like to keep my Google Photos outside of my Google Drive. Is there a step I missed or something else I can do? Or, is this a bug?