Weird bug : Backspace button make in-game text blur. Does anyone have this problem?

[azzendix]

Problem

• In-game text blur when press Backspace button.
• It's toggleable. Press it again and sharp text come back.
• It still happen even turn off ENB Effect.
• Example : Before1/After1 , Before2/After2 , Before3/After3

(To see difference, Open images in full resolution and switch tab quickly)

My setup

• My computer spec : CPU-Z Validator
• I'm not totally new mod user. I already install basic staff and follow what beginner's guide say.
• About Anti-aliasing and Anisotropic filter, Both turn off from launcher setting, Set Application-controlled from Nvidia driver setting.
• I'm using NLVA ENB with enable SMAA and EdgeAA.
• This is My modwat.ch. I don't use any font replacer mod.

I usually got this problem when using backspace to delete misspell word in console. It's toggleable so I can fix it by just press Backspace button again but It really annoys me. Any way to get rid of it?

EDIT: Added enblocal.ini and enbseries.ini

EDIT2 : I tried completely uninstall ENB by ENB FXAA SweetFX Manager and Remover and got no more issues. Issues still occur after load my ENB setup back.

[azzendix]

I tried disable SMAA injector and issue is gone! I think my backspace toggle SMAA injector. Now, I'm finding way to change keybind.

EDIT: Finally, I found it from injector.ini

[injector]
;toggle shader keycode
key_toggle = 8

8 means backspace. just change it to other key and my problem is gone.

SOLVED.