As of last week, I could see timestamps for other team members: I could see when they were online as well as when they had last edited the presentation.
This was incredibly useful--and critical--for knowing when I needed to sync their changes, when I'd better drop out so we didn't edit at cross-purposes, if the other person was available to chat (if he was at his PC), and generally if others had done anything since the last time I had logged in.
As of today (April 5, 2024) this feature seems to have disappeared. I even updated to see if that would fix the issue and it did not. I am incredibly unhappy that this very critical feature was removed, if it was done on purpose. If it was a bug, consider this a bug report.
Please fix this ASAP!!