I can confirm that has changed, but it was done on purpose:Since PubMed is a catalog of articles and doesn't actually store any articles, the URL and accessed date shouldn't be part of the citation. The URL is still attached to the item as a link, though.
Thats why we disabled this automatic link now.
It is wrong that stopping automatic updating of site translators will break Zotero. First, many users will not be interested in much more than PubMed. Second, it`s easy to update the translators manually from within Zotero
I'm not really sure what the appropriate behavior is here. We can easily save the links even when snapshots are disabled, but then should we also save snapshots as links if they don't have the same URL as the item?