Minecraft Version

MC 1.16.5

Forge Version

Forge 36.2.4 (MCP 20210115.111550)

Mod Version

1.16.5-2.14.4-258

Description of the Issue

Add module to tubes is not as easy as it should be.

Steps to Reproduce the Issue (Case 1)

1. Place a tube
2. Add a flow module
3. Place another tube in front of the flow module

Expected Behaviour (Case 1)

The new tube should connect to the old one

Actual Behaviour (Case 1)

The tube did not connect. (However it did not reproduce in the video)

Steps to Reproduce the Issue (Case 2)

1. Place at least 3 tubes in a row
2. Try to place a flow module on the middle tube

Expected Behaviour (Case 2)

Flow module should go on the targeted flow pipe

Actual Behaviour (Case 2)

Flow module go on the tube side

Steps to Reproduce the Issue (Case 3) (not on the video)

1. Connect a tube to some air provider
2. Air escape from the other tube side
3. Now place a flow module on that side

Expected Behaviour (Case 3)

Air continue to escape

Actual Behaviour (Case 3)

Air stop escape as if flow module act as cap.

Any other comments?

First seen on a dedicated server with a large modpack. But able to reproduce in single player with only pneumaticraft.
Evidence video at https://www.youtube.com/watch?v=_QjUQIeenKs&t=157s
Inline module should go on the tube center to explain why we can't connect other tubes to the sides (see video)

Case 1: seems to be working for you. I couldn't reproduce this problem either.

Case 2: working as intended. Inline tube modules (which are the flow and regulator modules) are not supposed to be placeable on a connected tube section, only on an open tube end, similar to how placing a flow meter on a pipe in real life would work - you need to break and reform the tube. What is a bug is that workaround you used to place a flow meter on a tube section at right angles to the one you wanted...

Case 3: can't reproduce this. The flow module always prevents air leakage once correctly attached to the end of a tube:

Case 3: can't reproduce this. The flow module always prevents air leakage once correctly attached to the end of a tube:

That what i said. Both flow module and regulator module should NEVER prevent air leakage similar to how they works in real life.

Ah, OK. Yes, it might be more logical, but I'm not convinced it's worth actually changing (and would be negative from a QoL point of view). So I'm not inclined to change that behaviour.

(From a "realism" point of view, imagine that inline modules have a built-in valve which shuts off air flow until a tube is connected to them...)

Fixed in 2.14.6 release