IIRC that weird disappearing act happens when a link doesn’t have proper formatting, such as missing the “http://” in the URL.
[Test Link](http://plato.stanford.edu/entries/rationalism-empiricism/) gives:
Test Link
(or just drop down the URL with the “http://” directly in the comment, as you can see above it automatically becomes a link)
IIRC that weird disappearing act happens when a link doesn’t have proper formatting, such as missing the “http://” in the URL.
[Test Link](http://plato.stanford.edu/entries/rationalism-empiricism/) gives:
Test Link
(or just drop down the URL with the “http://” directly in the comment, as you can see above it automatically becomes a link)