Time Machine can't access previous backups.
I am running Time Machine on an ugraded Mac Pro 2012, running Mac OS 10.14.6 Mojave. I have Time Machine running saving to an 6TB External Drive.
The Backups are running fine, and I can navigate the drive perfectly fine. But when I open Time Machine and try to use the Time Machine Restore interface ("Star wars" screen), I can only access the "Now" state – the very first pane, or current state. I cannot scroll back to previous backups, using either the arrow buttons, or the right edge time indicators.
This is a new-to-me machine but everything seems in order. The external is connected via USB 3, is Mac OS Extended (Journaled) with GIUD Partition Map - recommended for TM. On previous machines I've had to wait a few minuites wjile TM indexed the backups, but waiting a while didn't seem to do anything. I've no idea.
Weird. And frustrating.
Mac Pro, macOS 10.14