So on the April 19 patch they sped up Whirling Defense so it only lasts 3.25s for its full channel, it was reflected in the skill description aswell.
Now it seems the channel is back up to 5s, making it incompatible with the ‘Quick Draw’ trait (much like pre-april 19 patch)
The channel duration tooltip says 3.25s but the description mentions 5s, and it DOES last 5s.