I have a problem with mine though, but maybe it's a thing new controllers tend to do.
With my new smash controller, I have a hard time dashing back. Like when my character looks left and I want to dash dance by starting to dash to the right, my character often just stays in place and turns right without dashing. And please note that it's not because I can't dash dance. I've always dash danced successfully this way with my old purple controller. It's really frustrating as you get hit although you actually have reacted in time and wanted to dash away.
Did somebody have the same problem? I thought it's just because my controller was so new, it kinda has to wear out a little bit to work properly but I have this controller since it was released and it hasn't gotten better which makes me nervous. Is this something new controllers like to do?