Autolinking is not applied when copy-pasting a block of text, only when copy-pasting just the autolinkable string.
For example, copy-pasting these works – the VE core logic to autolink URLs, and the VE-MW logic to autolink magic links like ISBNs, kicks in:
- http://example.com/
- ISBN 1234567890
But when copy-pasting these, it doesn't:
- Visit http://example.com/ to see an example.
- Doe, John (2000). On examples. Example Publisher. ISBN 1234567890.
In particular, when copying a large block of content into a wiki page (e.g. an article you drafted in a text editor, or a notes from a session in an Etherpad), any links and ISBNs in it will not be autolinked, and will end up in wikitext wrapped in <nowiki>.