From [[WP:VPT#Reftool 1.0 failing when filling fields from URL]]:
I use Reftools 1.0 because it can grab data and fill in fields when given the source URL. When I use it today, instead of filling in the fields, I find that I'm no longer in edit more and I'm looking at the "Read" version of the article. The browser is Chrome.
I have the same problem, not just in Chrome but also in Safari.