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I'm working on my train stackers in a base. I observed that 2 separated trains close to each other result in one big fused train after being copy pasted.

My stacker has room and signals for 2 1-1 trains in a line. Signals are placed as close together to the trains as can be, so 2 trains end up being even nearer than the space between 2 elements of one train. At that point everything is working normally.
However, when i copy it (through blueprint of shift ctrl c+v), the result is one [1-1]-[1-1] train (ie the 2 small trains are fused together). Not quite sure whether the problem is at copy or paste step ?

The behaviour is the same with. horizontal/vertical/diagonal rails.

Reproduce : use following blueprint to setup the situation The train station is just there to get the trains in position, the black train is occupying it so they stop at the signals before.
Give some fuel to the 2 red trains, switch them to auto, they'll stack themselves together. Copy or blueprint the resulting close together trains and you get a 1-1-1-1 train when pasting it somewhere.

Might not be considered a bug since it's the normal game behavour if i tried to build the trains that close to each other in the first place ?

For the sake of completeness, the fusing doesn't happen if the middle signal is moved 1 tile left.

Thanks for the report. I'm not sure if this will be changed or not. Trains in blueprints don't make any attempt to remember which connections they had when the blueprint was created - similar to electric poles.

That could be changed - but I don't think it ever will be.

Unless one of the other devs wants to work on it, I'm going to move this to won't fix.

Hello!

I thought I read something recently about blueprints now remembering electric pole connections, can this bug be revisited?

19wolf wrote: ↑Fri Nov 27, 2020 5:55 pm Hello!

I thought I read something recently about blueprints now remembering electric pole connections, can this bug be revisited?

No.