Google Photos is not backing up photos saved from WhatsApp.
WhatsApp has two ways of storing files: automatic downloads in the WhatsApp Images folder, and when you manually select a photo and click "Save," which puts it in the Pictures/WhatsApp folder.
Google Photos is performing the automatic backup of the "WhatsApp Images" folder correctly, but it is not backing up—or even recognizing—the images in that specific "Pictures" subfolder.
Backup is working normally for all other folders, and I have already selected these specific folders for backup, etc., but it still won't save these photos to the cloud.
I have already checked and there is no .nomedia file in that folder. I have also tried selecting the specific folder as well as its parent folder.