Google Backup & Sync, the desktop app that allows you to sync your Google Drive to your PC or Mac, has a nice update rolling out that brings a lot of fixes, particularly for MacOS users. The updated version of Backup & Sync is build 3.41.9267.0638 for those keeping score at home and it is the same build for both MacOS and Windows. The update was released last week so chances are you have been updated to this new build already.
The big news in this update is the fixing of a bug on HEIF and HEIC image files. High Efficiency Image Format, or HEIF, is pretty new and is something iOS 11.x devices use for the most part for image file formats. When they first started hitting Google Photos and Google Drive, you could view them as you could with any other supported image format. However a bug introduced at the beginning of the year made HEIF images not visible in Google Photos. You could view them in Google Drive, but not Photos. This update to Google Backup & Sync appears to have fixed the issues.