enhanced visuals adds some screen effects, and they get disabled if i move my mouse onto an item on JEI.
don't know what causes, but i think i had better to mention @CreativeMD :D

using forge 2310, EnhancedVisuals v1.1.2 mc1.11.2, Blur-1.0.1-9, jei_1.11.2-4.3.6.282

and ah, it's a gui by other mod (levelup!) @CreativeMD
it happens when my body temperature a little bit increases (not hot, just on level 1 i think.)

So this is not a Blur issue?

@tterrag1098 any updates about the IFacade hook for Chisel?

Nope, i doubt that this is an issue of Blur, looks like this is just a EnhancedVisuals issue. Created a new issue on my repository so we can try to solve it there.