Live libraries are now “siloed” to the space they are published in, in both ways, you can’t “subscribe” or share.
Thanks for reporting the workaround, it is likely a bug, and not very practical for large user bases.
The workaround I described earlier doesn’t in fact give you live updates or use analytics. You need to republish the original file every time there’s an update, and restore links using “swap libraries”.
@Gleb good call, I changed the topic.
I had a confirmation from support that the “feature” was accidental and now disabled.