Also reported in GTNH GTNewHorizons/GT-New-Horizons-Modpack/issues/3790

Expected Behavior

When set Pipe of GT++ alloy's to "Input disable" by Wrench Shift+Right click, Texture of pipe is changed.

Current Behavior

Texture of pipe is not changed.

Game Environment

Include as many relevant details about the game environment or modpack you experienced the bug in/on.
If you are using a Modpack:

• Modpack Name:GTNewHorizons ver2.0.5.1
• Version used:1.7.02.09

Also include:

• Gregtech version:5.09.32.36
• IC2 version:2.2.828a-experimental
• Java version:Java1.8.0_191
• Operating System:Windows 10 Pro 64bit & CentOS7 64bit

Misc Info

Check all that apply ([ ] -> [x] - use a lowercase x)

•    Using GT:NH/GT:New Horizons?
•    Single Player?
•    Multi Player?

Due to this horrible handling of pipes by the developers over the years, without looking I'll say no I won't fix this issue. Keep in mind I must retain compatibility with Gt 5.08.x as well, so some things may not be possible.

As stated above, won’t fix. A minor visual issue vs losing backwards compatibility isn’t worth it, sorry.