Talk:Negation Swarm/@comment-70.187.171.228-20170922070941/@comment-30617681-20180325230008

It is my Extremely Uneducated Guess that this mod does not "block" status effects, but simply sets their durations to 0, and preventing their effects.

Thus, the blast-proc from an explosive barrel hits you, is applied, fails your challenge, but then is nullified before it can actually apply the effects of a blast proc (Knockdown).