The current approach for adding a comment for diffs in a crucible is to click on the
screen. Some users have reported that this style leads to comments being
accidentally created when the user is just trying to set focus to the
screen, or click on the screen for some other purpose.

Is it possible to have options for creating comments, possibly having a double
click be the mouse input, or perhaps restricting comment creation to clicks
on a specific part of the screen etc