A notebook that I hadn’t worked on in months shows today as latest edit date, but only when I’m signed out:
Notebook: Unavailable NPM Packages / Fabian Iwand | Observable
Looks like pausing a live_unlisted notebook means that time comes back null and then gets coalesced to new Date()! Think that bug has probably been around for four years. Probably won’t fix on the old site, just plowing on to new…
Ty Fabian 
It’s not ideal that this misrepresents my activity when I share links to paused notebooks.
Can you let Claude take care of the fix? 