This is not a gameplay change, but only a tweak to the UI which I think will help new players understand the game and also be useful in general. Right now, the electricity usage of an object is displayed like this:
Energy consumption: 13 kW
Drain: 400 W
The problem I see (remembering my experience ...

I would suggest that you keep your old .12 save as there is a high chance that if you merged with early .13 your save gets corrupted later on.

I recognize that 0.13.* is experimental, and I have kept my old saves for that very reason, but are you saying that there is a known problem that means a ...

Try:
/c game.player.selected.fix_rail()

Report: Doing that just made the rail minable but still acting as an obstacle, but then mining and replacing it resulted in proper behavior.

Thanks for the tip that will allow me to continue that game. (This is still a bug report for the crash and the ...

Currently:

If you replace a belt with a belt with a different curvature (right angle vs. straight), you pick up the items on it.
If you replace a belt with a belt with the same curvature (reverse direction or opposite bend), the items stay on it.
If you rotate a belt with the rotate key, the ...

I have a section of track which "cannot be mined". When a train drives up to it, the train stops. If I remove and replace the section to the right of it, and then drive a train onto it from the right (backward), the game crashes.

This is a save originally created in 0.11.x (possibly earlier). I don ...