Announced two weeks ago from the G Suite Updates Blog, the sharing dialog for Google Drive, Docs, Sheets, Slides, and Forms is being updated. This is a replacement to the graphical interface that is used to share files and folders in G Suite.
This new interface is intended to make it easier to share files and folders with specific people, and not expand access beyond what is necessary. This update may already be available for some Allegheny G Suite users, and will be available shortly for anyone who still has not had the update applied.
For more information, see the original post in the G Suite Updates Blog here.