add comment, comment lost when 'comment' button pressed accidently instead of add

v4.1.1#522

When I press 'comment', write lengthy comment, sometimes I accidently press 'comment' again not 'add' (Because of the layot, and button caption "comment" somehow instinctively suggests that comment will be added). In this case comment text is lost. It would be nice, that in these cases comment text would not be lost, but reappear when I press 'comment' again or jira could warn me that the text is going to be lost.

please see screenshot: