Braum Shield

Braum E ability has been acting wonky and feels very inconsistent, to the point where I am messaging you. As a Braum main, 300,000 mastery points, I would like clarification on how his shield works. It claims to block all projectiles and negate all damage of the first projectile. However, it feels really buggy and inconsistent. Examples: Jhin's curtain call with death fire touch- The shield will block one tic of dft which is not a projectile and then will only partially negate a bullet that comes in next. Jinx flame chompers- counts as a projectile but are not destroyed like it claims, instead Braums unbreakable displaces the traps at his feet before the activation delay. The same is with Fizz ult. The final example I have is with Karma's R-Q combo. If Braum blocks the projectile with the shield the secondary AOE explosion will still detonate and do damage after the delay, but it claims to destroy the particle. I have encountered plenty more examples and I'm not looking for a Braum buff, though I will admit it would be nice, I'm simply looking for consistency.