Subcircuit terminals shared between all Instances.

[Merilix]

Because the pins of subcircuits are made of named nodes, they are all he same if you have multiple instances.
They behave like they are connected parallel.

Terminals of a subcircuit must be independent of other instances. They should be build of an element say "pin" which behaves like a normal unnamed node.

[pfalstad]

Can you give an example? I'm not seeing that.

https://tinyurl.com/2kfz7jkl

[Merilix]

I can't see how test1 in your example is made.
But here you go https://tinyurl.com/22cholyb
Thats my sub-circuit: https://tinyurl.com/2buafrrx

Intended was to show the behavior of induced current/voltage in a loop using DC simulation.
Wanted to simplify that: https://tinyurl.com/26xl3qam
My sub-circuit was meant to represent a single segment of the wire loop.

[pfalstad]

There are some known bugs with 2-terminal voltage sources in subcircuits. This looks like another one.

I used a workaround to fix your subcircuit: https://tinyurl.com/28rots7t

I also added some grounds, just to fix the voltage colors, but it works without the grounds.

I took your subcircuit and added a ground, not connected to anything, like so: https://tinyurl.com/25olne3u Then I select everything but the ground and do "Create Subcircuit". Then it works.