As part of the roll out of collaborative editing, the RStudio Cloud team changed the way user files are stored within projects. Specifically, each user that opens a project will be provided with their own private home directory, as well as their own R session state. This was necessary to support multi-user collaborative editing, as well as to enhance the security of user-specific files.
If collaborative editing is enabled, all collaborators on a project will continue to have access to files in the project directory. However, each user will now have their own R session data, which includes console and R command histories and R environment state. As a consequence of this change, Admins or Moderators opening projects belonging to another user in a space will not see the session data from that user.
If collaborative editing is not enabled, users accessing the project will see the same behavior as before. Only a single user can access a project at a time, and all users share the same R session, home directory, history, and environment.
The RStudio Cloud team