How to reproduce (see video): https://drive.google.com/file/d/1IZSFDhB6HCqQ8GM5FP3qt1x4ROIkFDlp/view?usp=sharing


have a underground belt
add single part of new one between ends of the first belt
rotate enter of outer belt
remove added inner belt part (check item count in belt at the right ...

Ok, i found the way to reproduce it.
You need one full-length underground blue belt full of items.
Then you need to add same belt right after first part, but with 1 length total.
Then rotate this short belt.
Add couple of blue belts right on entrance of new one.
Throw same cargo items on ...

I was playing with belt, switching it direction several time and modifying parts, then at some point i found this stack of 25 explosives on single piece of it. Probably appeared from underground part.
Tried to reproduce this, but no luck yet.
Also lost exact log-file when this happens, attached log ...

Final solution:
...
2. Refill. When one of the train contents (item count) gets low, it is interrupted and sent home to refill. I had to add "allow interrupting other interrupts" to this, because otherwise it just keeps doing #1 with an empty train. I tried playing with priorities, but this ...

No mods, no space age DLC.

The game crashes while trying to make autosave randomly.
Not sure if it's connected, but moment before i ordered to deconstruct part of train station with roboport which was not connected to other roboports (last one for its logistic network).

autosave1 - previous ...

it was tightly bound to the decider having only 1 condition while in 2.0 a decider could have multiple conditions.

yeah, exactly. I personally thought that these special signals also define how signals do pass through combinators. But it applicable only to one condition, that's true. I think ...

Not a bug. Decider is in "normal" mode, anything on the left is true so it goes to the outputs, and "anything" selects any signal from the input. "anything" has nothing to do between sides because it would create a conflict what should be selected if there would be "anything > 10 OR anything < -10 ...