Description of the issue:

I can't change redstone wire connector's mode from input to output. Tried screwdriver, hammer and even empty hand, right clicking/shift+right clicking, the only thing I can change is color by right clicking with a screwdriver.

Crashlog:

No crash.

Versions & Modlist

Minecraft 1.16.1 Forge 32.0.108
ImmersiveEngineering-1.16.1-3.2.0-115
Tested in a clean instance

I can't replicate the issue.
I'm using the screwdriver and it opens the GUI, giving me access to the colours, as well as the big input/output button up top. Works just fine.

Found the problem, it was my texture pack with dark GUI, it made the button almost invisible. Though I don't understand how. Sorry for wasting time.