You can click on “View History” in the menu in the upper right and then fiddle with the locked version there or you can navigate to the latest “version-pinned” URL https://observablehq.com/@:user/:notebook@XXXX.
A few related feature requests come to mind:
- Could we get a keyboard shortcut for entering the history mode?
- I wish it were easier to get the latest version number. Having to reopen the notebook in history mode to get the version number can be painful for notebooks with a lot of computationally-heavy cells (see also: Feature requests: diffs / history in safe mode). Previously I could just click on the link to the https://api.observablehq.com/@:user/:notebook.js?v=3 file, but ever since it’s been removed I’ve had to mess around with the notebook URL to get to the .js?v=3 file instead. Maybe htttps://observablehq.com/@:user/:notebook@latest could redirect to the latest version-pinned URL?