How do I get Lastpass to work with native authentication when host-mapped? It won't auto-fill--help!
Just modify your Lastpass URL entry to use the (mysite).zendesk.com version of your URL. Making that change should fix the auto-fill.
Update (February 2018): The above has changed slightly and may not fully resolve any issues you're experiencing. Instead, I recommend following Brett's advice in the comments below (found here).