You are conceptually misunderstanding what this ability does. Every projectile goes through Time Wall. Not one out of three of Haze's Sleep Daggers go through it, but three out of three. The two out of three cases where you think it didn't went through are just cases where it didn't hit anyone behind the wall and you didn't notice.
There's a reason the skill description says it stops time for projectiles, and not that it eats projectiles and sends them into another universe.
Here's a video to make it more clear what's going on: