UI Detect Setup - Final Fantasy 7 Remake

Hello everyone !

I want to use UIDetect to remove all shaders effect when I open the main menu. I modified the fxh script as indicated and tried with 1 and multiple pixels that are not transparent, but everytime the effect just "flickers" it works for 1 frame and then go back to shader the next frame. So apparently ity detects the right color at the right pixel coordinates, but toggle back right after. What am I missing there? I tried with some character colors and with the yellow rectangle.

Here is the menu I'm testing 

 

The UI looks pretty transparent to me.
Other than that, have you tried both dx11 and dx12 modes, with or without upscaling/resolution scaling etc?