LD Fluid Pipe doesn't work in some cases

[ConstasJ]

Checked for existing issues

• [X] I have checked for existing issues, and have found none.

Tested latest version

• [X] I have checked that this occurs on the latest version.

GregTech CEu Version

v1.2.3.a

Recipe Viewer Installed

None

Environment

Dedicated Server

Cross-Mod Interaction

Unsure

Other Installed Mods

AE2, Mekanism, Botania, Thermal Series, Immersive Engineering, Railcraft Reborn, Ender IO

Expected Behavior

Expect to normally transfer fluids from the input interface to output interface

Actual Behavior

Nothing happened.

Steps to Reproduce

1. Build a LD fluid pipe with complicated shape.
2. Then put some fluid into input side.
3. You'll find nothing out from output side.

Additional Information

When there is no complicated shape for pipe, like only a straight line, it works normally.

[ConstasJ]

I've tested more, and find that it often not work, even in a straight line.

[Ghostipedia]

I've tested more, and find that it often not work, even in a straight line.

How long are the LD Fluid pipelines you are making, can you attach some example screenshots? There's a minimum amount of casing blocks that need to be between the input and output which is why I ask