Ideally I as a power user would like to be able to report a bug with 1 click. 2 is passable, but then it should be very easy and visible and simple.
Dolibarr has a "Report a bug" link in the left menu on every single page. It automatically prefills the github issue with information about the installation. Very nice experience!
List of steps to reproduce (step by step, including full links if applicable):
What happens?:
What should have happened instead?:
Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc: