Hello
I've searched quite some time but i couldnt find the blueprint logic singal.
I copied an example blueprint where these signals are present.

Is this a bug in the current version or have i potatoes on my eyes?

https://ibb.co/k01SgMJ

It should be under Category 2 (Production). But the mod usually gets the signal from a blueprint in a chest.

The Mod itshelf works fine but if i want to make combinators i'm stuck.
Nilaus made a sample where he used some combinators. https://factorioprints.com/view/-Lk0NpSL_rfwkEOmxryX
If i place the blueprint and all cominators have the bp singal and work fine.
The thing is i cant make changes where i have to place a new bp signal in my own combinators.
My Production tab. Maybe oil organizer messed things up.
https://ibb.co/zrTW4y8

Blueprint should be in the first row in that image. A mod probably removed it.

I fixed that issue with some unknown mod by adding this code into the items.lua

{
type = "blueprint",
name = "blueprint",
icon = "BlueprintSignals/graphics/icons/blueprint.png",
icon_size = 64, icon_mipmaps = 4,
subgroup = "tool",
order = "c[automated-construction]-b[blueprint]",
stack_size = 1,
entity_filter_count = 30,
tile_filter_count = 30,
selection_color = {1, 0, 0},
alt_selection_color = {0, 0, 1},
selection_mode = {"blueprint"},
alt_selection_mode = {"blueprint"},
selection_cursor_box_type = "not-allowed",
alt_selection_cursor_box_type = "not-allowed"
},

This adds the icon back in place for the signals.
For odd reasons this code is also missing in the base items.lua

Not sure what's going wrong, but it seems unlikely that oil patches organizer is the cause; all it does is add more things, and register itself to unlock with oil-processing research.